40102902 has 48 divisors (see below), whose sum is σ = 102515712. Its totient is φ = 11087280.

The previous prime is 40102897. The next prime is 40102913. The reversal of 40102902 is 20920104.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1228 + ... + 9039.

It is an arithmetic number, because the mean of its divisors is an integer number (2135744).

Almost surely, 2^40102902 is an apocalyptic number.

40102902 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

40102902 is an abundant number, since it is smaller than the sum of its proper divisors (62412810).

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

40102902 is a wasteful number, since it uses less digits than its factorization.

40102902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10313 (or 10310 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 40102902 is about 6332.6852124514. The cubic root of 40102902 is about 342.2882047879.

The spelling of 40102902 in words is "forty million, one hundred two thousand, nine hundred two".