20120502140 has 24 divisors (see below), whose sum is σ = 42969210480. Its totient is φ = 7911790208.

The previous prime is 20120502121. The next prime is 20120502191. The reversal of 20120502140 is 4120502102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8524457 + ... + 8526816.

It is an arithmetic number, because the mean of its divisors is an integer number (1790383770).

Almost surely, 2^20120502140 is an apocalyptic number.

20120502140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120502140 is an abundant number, since it is smaller than the sum of its proper divisors (22848708340).

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

20120502140 is a wasteful number, since it uses less digits than its factorization.

20120502140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17051341 (or 17051339 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The spelling of 20120502140 in words is "twenty billion, one hundred twenty million, five hundred two thousand, one hundred forty".