20503502142 has 16 divisors (see below), whose sum is σ = 41008408320. Its totient is φ = 6834266712.

The previous prime is 20503502119. The next prime is 20503502147. The reversal of 20503502142 is 24120530502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20503502147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307053 + ... + 367815.

It is an arithmetic number, because the mean of its divisors is an integer number (2563025520).

Almost surely, 2^20503502142 is an apocalyptic number.

20503502142 is an abundant number, since it is smaller than the sum of its proper divisors (20504906178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20503502142 is a wasteful number, since it uses less digits than its factorization.

20503502142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117007.

The product of its (nonzero) digits is 2400, while the sum is 24.

The spelling of 20503502142 in words is "twenty billion, five hundred three million, five hundred two thousand, one hundred forty-two".