234212420 has 24 divisors (see below), whose sum is σ = 529680984. Its totient is φ = 86478336.

The previous prime is 234212387. The next prime is 234212437. The reversal of 234212420 is 24212432.

It can be written as a sum of positive squares in 4 ways, for example, as 4 + 234212416 = 2^2 + 15304^2 .

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 = 234212392 and 234212401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450149 + ... + 450668.

It is an arithmetic number, because the mean of its divisors is an integer number (22070041).

Almost surely, 2^234212420 is an apocalyptic number.

234212420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

234212420 is an abundant number, since it is smaller than the sum of its proper divisors (295468564).

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

234212420 is a wasteful number, since it uses less digits than its factorization.

234212420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900839 (or 900837 counting only the distinct ones).

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

The square root of 234212420 is about 15304.0001306848. Note that the first 3 decimals coincide. The cubic root of 234212420 is about 616.4104232027.

Adding to 234212420 its reverse (24212432), we get a palindrome (258424852).

The spelling of 234212420 in words is "two hundred thirty-four million, two hundred twelve thousand, four hundred twenty".