40642044 has 24 divisors (see below), whose sum is σ = 94980480. Its totient is φ = 13526064.

The previous prime is 40642039. The next prime is 40642051. The reversal of 40642044 is 44024604.

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, 6577 + ... + 11159.

It is an arithmetic number, because the mean of its divisors is an integer number (3957520).

Almost surely, 2^40642044 is an apocalyptic number.

It is an amenable number.

40642044 is an abundant number, since it is smaller than the sum of its proper divisors (54338436).

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

40642044 is a wasteful number, since it uses less digits than its factorization.

40642044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5329 (or 5327 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 40642044 is about 6375.1112931462. Note that the first 3 decimals coincide. The cubic root of 40642044 is about 343.8152852751.

Adding to 40642044 its reverse (44024604), we get a palindrome (84666648).

The spelling of 40642044 in words is "forty million, six hundred forty-two thousand, forty-four".