20142524 has 6 divisors (see below), whose sum is σ = 35249424. Its totient is φ = 10071260.

The previous prime is 20142517. The next prime is 20142547. The reversal of 20142524 is 42524102.

It is a happy number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 20142496 and 20142505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2517812 + ... + 2517819.

It is an arithmetic number, because the mean of its divisors is an integer number (5874904).

Almost surely, 2^20142524 is an apocalyptic number.

It is an amenable number.

20142524 is a deficient number, since it is larger than the sum of its proper divisors (15106900).

20142524 is a wasteful number, since it uses less digits than its factorization.

20142524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5035635 (or 5035633 counting only the distinct ones).

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

The square root of 20142524 is about 4488.0423349162. The cubic root of 20142524 is about 272.0850188382.

Adding to 20142524 its reverse (42524102), we get a palindrome (62666626).

The spelling of 20142524 in words is "twenty million, one hundred forty-two thousand, five hundred twenty-four".