402245052 has 24 divisors (see below), whose sum is σ = 1023896832. Its totient is φ = 121892400.

The previous prime is 402245047. The next prime is 402245059. The reversal of 402245052 is 250542204.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402245059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1523524 + ... + 1523787.

It is an arithmetic number, because the mean of its divisors is an integer number (42662368).

Almost surely, 2^402245052 is an apocalyptic number.

It is an amenable number.

402245052 is an abundant number, since it is smaller than the sum of its proper divisors (621651780).

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

402245052 is a wasteful number, since it uses less digits than its factorization.

402245052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3047329 (or 3047327 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 402245052 is about 20056.0477661976. The cubic root of 402245052 is about 738.1822024993.

Adding to 402245052 its reverse (250542204), we get a palindrome (652787256).

The spelling of 402245052 in words is "four hundred two million, two hundred forty-five thousand, fifty-two".