402959642 has 4 divisors (see below), whose sum is σ = 604439466. Its totient is φ = 201479820.

The previous prime is 402959629. The next prime is 402959659. The reversal of 402959642 is 246959204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 212547241 + 190412401 = 14579^2 + 13799^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 402959642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100739909 + ... + 100739912.

Almost surely, 2^402959642 is an apocalyptic number.

402959642 is a deficient number, since it is larger than the sum of its proper divisors (201479824).

402959642 is a wasteful number, since it uses less digits than its factorization.

402959642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201479823.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 402959642 is about 20073.8546871297. The cubic root of 402959642 is about 738.6190718141.

The spelling of 402959642 in words is "four hundred two million, nine hundred fifty-nine thousand, six hundred forty-two".