402155 has 16 divisors (see below), whose sum is σ = 544320. Its totient is φ = 283008.

The previous prime is 402139. The next prime is 402197. The reversal of 402155 is 551204.

It is a cyclic number.

It is not a de Polignac number, because 402155 - 2⁴ = 402139 is a prime.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1361 + ... + 1629.

It is an arithmetic number, because the mean of its divisors is an integer number (34020).

2⁴⁰²¹⁵⁵ is an apocalyptic number.

402155 is a deficient number, since it is larger than the sum of its proper divisors (142165).

402155 is a wasteful number, since it uses less digits than its factorization.

402155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 402155 is about 634.1569206435. The cubic root of 402155 is about 73.8127111915.

Adding to 402155 its reverse (551204), we get a palindrome (953359).

The spelling of 402155 in words is "four hundred two thousand, one hundred fifty-five".