402605140 has 48 divisors (see below), whose sum is σ = 992380032. Its totient is φ = 134303616.

The previous prime is 402605131. The next prime is 402605171. The reversal of 402605140 is 41506204.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 33682 + ... + 44041.

It is an arithmetic number, because the mean of its divisors is an integer number (20674584).

Almost surely, 2^402605140 is an apocalyptic number.

It is an amenable number.

402605140 is an abundant number, since it is smaller than the sum of its proper divisors (589774892).

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

402605140 is a wasteful number, since it uses less digits than its factorization.

402605140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77776 (or 77774 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 402605140 is about 20065.0228008841. The cubic root of 402605140 is about 738.4024092892.

The spelling of 402605140 in words is "four hundred two million, six hundred five thousand, one hundred forty".