20120502142 has 8 divisors (see below), whose sum is σ = 32502349656. Its totient is φ = 9286385592.

The previous prime is 20120502121. The next prime is 20120502191. The reversal of 20120502142 is 24120502102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386932708 + ... + 386932759.

It is an arithmetic number, because the mean of its divisors is an integer number (4062793707).

Almost surely, 2^20120502142 is an apocalyptic number.

20120502142 is a deficient number, since it is larger than the sum of its proper divisors (12381847514).

20120502142 is a wasteful number, since it uses less digits than its factorization.

20120502142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773865482.

The product of its (nonzero) digits is 320, while the sum is 19.

The spelling of 20120502142 in words is "twenty billion, one hundred twenty million, five hundred two thousand, one hundred forty-two".