40242512 has 20 divisors (see below), whose sum is σ = 78730080. Its totient is φ = 19925088.

The previous prime is 40242511. The next prime is 40242533. The reversal of 40242512 is 21524204.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40242511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10562 + ... + 13857.

It is an arithmetic number, because the mean of its divisors is an integer number (3936504).

Almost surely, 2^40242512 is an apocalyptic number.

It is an amenable number.

40242512 is a deficient number, since it is larger than the sum of its proper divisors (38487568).

40242512 is a wasteful number, since it uses less digits than its factorization.

40242512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24530 (or 24524 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 40242512 is about 6343.6986057031. The cubic root of 40242512 is about 342.6849467320.

Adding to 40242512 its reverse (21524204), we get a palindrome (61766716).

The spelling of 40242512 in words is "forty million, two hundred forty-two thousand, five hundred twelve".