40556140 has 12 divisors (see below), whose sum is σ = 85167936. Its totient is φ = 16222448.

The previous prime is 40556119. The next prime is 40556177. The reversal of 40556140 is 4165504.

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, 1013884 + ... + 1013923.

It is an arithmetic number, because the mean of its divisors is an integer number (7097328).

Almost surely, 2^40556140 is an apocalyptic number.

It is an amenable number.

40556140 is an abundant number, since it is smaller than the sum of its proper divisors (44611796).

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

40556140 is a wasteful number, since it uses less digits than its factorization.

40556140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027816 (or 2027814 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 40556140 is about 6368.3702781795. The cubic root of 40556140 is about 343.5728766836.

The spelling of 40556140 in words is "forty million, five hundred fifty-six thousand, one hundred forty".