402508942 has 16 divisors (see below), whose sum is σ = 661968000. Its totient is φ = 182037240.

The previous prime is 402508921. The next prime is 402508943. The reversal of 402508942 is 249805204.

It is a junction number, because it is equal to n+sod(n) for n = 402508898 and 402508907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402508943) 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, 41592 + ... + 50347.

It is an arithmetic number, because the mean of its divisors is an integer number (41373000).

Almost surely, 2^402508942 is an apocalyptic number.

402508942 is a deficient number, since it is larger than the sum of its proper divisors (259459058).

402508942 is a wasteful number, since it uses less digits than its factorization.

402508942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92151.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 402508942 is about 20062.6255011651. The cubic root of 402508942 is about 738.3435936026.

The spelling of 402508942 in words is "four hundred two million, five hundred eight thousand, nine hundred forty-two".