402304542 has 16 divisors (see below), whose sum is σ = 805805712. Its totient is φ = 133902080.

The previous prime is 402304489. The next prime is 402304543. The reversal of 402304542 is 245403204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402304543) 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, 45459 + ... + 53582.

It is an arithmetic number, because the mean of its divisors is an integer number (50362857).

Almost surely, 2^402304542 is an apocalyptic number.

402304542 is an abundant number, since it is smaller than the sum of its proper divisors (403501170).

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

402304542 is a wasteful number, since it uses less digits than its factorization.

402304542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99723.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 402304542 is about 20057.5308051614. The cubic root of 402304542 is about 738.2185918382.

Adding to 402304542 its reverse (245403204), we get a palindrome (647707746).

The spelling of 402304542 in words is "four hundred two million, three hundred four thousand, five hundred forty-two".