402234520 has 32 divisors (see below), whose sum is σ = 913997520. Its totient is φ = 159299200.

The previous prime is 402234509. The next prime is 402234523. The reversal of 402234520 is 25432204.

It is a junction number, because it is equal to n+sod(n) for n = 402234491 and 402234500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402234523) 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 7 ways as a sum of consecutive naturals, for example, 45742 + ... + 53821.

Almost surely, 2^402234520 is an apocalyptic number.

402234520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402234520 is an abundant number, since it is smaller than the sum of its proper divisors (511763000).

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

402234520 is a wasteful number, since it uses less digits than its factorization.

402234520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99675 (or 99671 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 402234520 is about 20055.7852002857. The cubic root of 402234520 is about 738.1757598240.

Adding to 402234520 its reverse (25432204), we get a palindrome (427666724).

The spelling of 402234520 in words is "four hundred two million, two hundred thirty-four thousand, five hundred twenty".