402172 has 12 divisors (see below), whose sum is σ = 728280. Its totient is φ = 194096.

The previous prime is 402139. The next prime is 402197. The reversal of 402172 is 271204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1618 + ... + 1849.

It is an arithmetic number, because the mean of its divisors is an integer number (60690).

2⁴⁰²¹⁷² is an apocalyptic number.

It is an amenable number.

402172 is a deficient number, since it is larger than the sum of its proper divisors (326108).

402172 is a wasteful number, since it uses less digits than its factorization.

402172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500 (or 3498 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 402172 is about 634.1703241244. The cubic root of 402172 is about 73.8137512535.

Adding to 402172 its reverse (271204), we get a palindrome (673376).

The spelling of 402172 in words is "four hundred two thousand, one hundred seventy-two", and thus it is an iban number.