234440421 has 16 divisors (see below), whose sum is σ = 331469568. Its totient is φ = 146880000.

The previous prime is 234440413. The next prime is 234440461. The reversal of 234440421 is 124044432.

It is a happy number.

It is not a de Polignac number, because 234440421 - 2³ = 234440413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 234440391 and 234440400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234440461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35241 + ... + 41361.

It is an arithmetic number, because the mean of its divisors is an integer number (20716848).

Almost surely, 2^234440421 is an apocalyptic number.

It is an amenable number.

234440421 is a deficient number, since it is larger than the sum of its proper divisors (97029147).

234440421 is a wasteful number, since it uses less digits than its factorization.

234440421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6892.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 234440421 is about 15311.4473842286. The cubic root of 234440421 is about 616.6103793117.

Adding to 234440421 its reverse (124044432), we get a palindrome (358484853).

It can be divided in two parts, 23 and 4440421, that added together give a palindrome (4440444).

The spelling of 234440421 in words is "two hundred thirty-four million, four hundred forty thousand, four hundred twenty-one".