20142175244 has 6 divisors (see below), whose sum is σ = 35248806684. Its totient is φ = 10071087620.

The previous prime is 20142175241. The next prime is 20142175267. The reversal of 20142175244 is 44257124102.

It is a self number, because there is not a number n which added to its sum of digits gives 20142175244.

It is not an unprimeable number, because it can be changed into a prime (20142175241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2517771902 + ... + 2517771909.

It is an arithmetic number, because the mean of its divisors is an integer number (5874801114).

Almost surely, 2^20142175244 is an apocalyptic number.

It is an amenable number.

20142175244 is a deficient number, since it is larger than the sum of its proper divisors (15106631440).

20142175244 is a wasteful number, since it uses less digits than its factorization.

20142175244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5035543815 (or 5035543813 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

Adding to 20142175244 its reverse (44257124102), we get a palindrome (64399299346).

The spelling of 20142175244 in words is "twenty billion, one hundred forty-two million, one hundred seventy-five thousand, two hundred forty-four".