234221420 has 48 divisors (see below), whose sum is σ = 514805760. Its totient is φ = 89343936.

The previous prime is 234221411. The next prime is 234221423. The reversal of 234221420 is 24122432.

234221420 = T₂₅₇₁ + T₂₅₇₂ + ... + T₂₆₃₉.

234221420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 234221392 and 234221401.

It is not an unprimeable number, because it can be changed into a prime (234221423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219809 + ... + 220871.

It is an arithmetic number, because the mean of its divisors is an integer number (10725120).

Almost surely, 2^234221420 is an apocalyptic number.

234221420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 234221420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257402880).

234221420 is an abundant number, since it is smaller than the sum of its proper divisors (280584340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

234221420 is a wasteful number, since it uses less digits than its factorization.

234221420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574 (or 1572 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 234221420 is about 15304.2941686312. The cubic root of 234221420 is about 616.4183186319.

Adding to 234221420 its reverse (24122432), we get a palindrome (258343852).

It can be divided in two parts, 23422 and 1420, that added together give a palindrome (24842).

The spelling of 234221420 in words is "two hundred thirty-four million, two hundred twenty-one thousand, four hundred twenty".