40042960 has 40 divisors (see below), whose sum is σ = 93494016. Its totient is φ = 15949440.

The previous prime is 40042957. The next prime is 40042993. The reversal of 40042960 is 6924004.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20757 + ... + 22603.

Almost surely, 2^40042960 is an apocalyptic number.

40042960 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40042960 is an abundant number, since it is smaller than the sum of its proper divisors (53451056).

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

40042960 is a wasteful number, since it uses less digits than its factorization.

40042960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131 (or 2125 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 40042960 is about 6327.9506951303. The cubic root of 40042960 is about 342.1175798078.

Adding to 40042960 its reverse (6924004), we get a palindrome (46966964).

The spelling of 40042960 in words is "forty million, forty-two thousand, nine hundred sixty".