402361081 has 8 divisors (see below), whose sum is σ = 423907200. Its totient is φ = 380851920.

The previous prime is 402361027. The next prime is 402361087. The reversal of 402361081 is 180163204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402361081 - 2¹⁷ = 402230009 is a prime.

It is a super-2 number, since 2×402361081² = 323788879006977122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402361087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14736 + ... + 31966.

It is an arithmetic number, because the mean of its divisors is an integer number (52988400).

Almost surely, 2^402361081 is an apocalyptic number.

It is an amenable number.

402361081 is a deficient number, since it is larger than the sum of its proper divisors (21546119).

402361081 is a wasteful number, since it uses less digits than its factorization.

402361081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18479.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 402361081 is about 20058.9401763902. The cubic root of 402361081 is about 738.2531727601.

The spelling of 402361081 in words is "four hundred two million, three hundred sixty-one thousand, eighty-one".