40902 has 16 divisors (see below), whose sum is σ = 86832. Its totient is φ = 12800.

The previous prime is 40897. The next prime is 40903. The reversal of 40902 is 20904.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 40902.

It is not an unprimeable number, because it can be changed into a prime (40903) by changing a digit.

40902 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99 + ... + 302.

It is an arithmetic number, because the mean of its divisors is an integer number (5427).

2⁴⁰⁹⁰² is an apocalyptic number.

40902 is an abundant number, since it is smaller than the sum of its proper divisors (45930).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43416).

40902 is a wasteful number, since it uses less digits than its factorization.

40902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 40902 is about 202.2424287829. The cubic root of 40902 is about 34.4546768844.

The spelling of 40902 in words is "forty thousand, nine hundred two".