402952140 has 144 divisors (see below), whose sum is σ = 1268467200. Its totient is φ = 103469184.

The previous prime is 402952087. The next prime is 402952261. The reversal of 402952140 is 41259204.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 611131 + ... + 611789.

It is an arithmetic number, because the mean of its divisors is an integer number (8808800).

Almost surely, 2^402952140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402952140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (634233600).

402952140 is an abundant number, since it is smaller than the sum of its proper divisors (865515060).

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

402952140 is a wasteful number, since it uses less digits than its factorization.

402952140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 402952140 is about 20073.6678262843. The cubic root of 402952140 is about 738.6144881006.

It can be divided in two parts, 4029 and 52140, that added together give a square (56169 = 237²).

The spelling of 402952140 in words is "four hundred two million, nine hundred fifty-two thousand, one hundred forty".