40142524 has 6 divisors (see below), whose sum is σ = 70249424. Its totient is φ = 20071260.

The previous prime is 40142519. The next prime is 40142527. The reversal of 40142524 is 42524104.

It is a happy number.

It is a super-2 number, since 2×40142524² = 3222844466181152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40142495 and 40142504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40142527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5017812 + ... + 5017819.

Almost surely, 2^40142524 is an apocalyptic number.

It is an amenable number.

40142524 is a deficient number, since it is larger than the sum of its proper divisors (30106900).

40142524 is a wasteful number, since it uses less digits than its factorization.

40142524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10035635 (or 10035633 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 40142524 is about 6335.8128128915. The cubic root of 40142524 is about 342.4008955453.

Adding to 40142524 its reverse (42524104), we get a palindrome (82666628).

The spelling of 40142524 in words is "forty million, one hundred forty-two thousand, five hundred twenty-four".