40142924 has 6 divisors (see below), whose sum is σ = 70250124. Its totient is φ = 20071460.

The previous prime is 40142863. The next prime is 40142929. The reversal of 40142924 is 42924104.

It is a super-2 number, since 2×40142924² = 3222908694539552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40142893 and 40142902.

It is not an unprimeable number, because it can be changed into a prime (40142929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5017862 + ... + 5017869.

It is an arithmetic number, because the mean of its divisors is an integer number (11708354).

Almost surely, 2^40142924 is an apocalyptic number.

It is an amenable number.

40142924 is a deficient number, since it is larger than the sum of its proper divisors (30107200).

40142924 is a wasteful number, since it uses less digits than its factorization.

40142924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10035735 (or 10035733 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 40142924 is about 6335.8443794020. The cubic root of 40142924 is about 342.4020328256.

The spelling of 40142924 in words is "forty million, one hundred forty-two thousand, nine hundred twenty-four".