20210002140 has 24 divisors (see below), whose sum is σ = 56588006160. Its totient is φ = 5389333888.

The previous prime is 20210002129. The next prime is 20210002147. The reversal of 20210002140 is 4120001202.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210002147) 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, 168416625 + ... + 168416744.

It is an arithmetic number, because the mean of its divisors is an integer number (2357833590).

Almost surely, 2^20210002140 is an apocalyptic number.

20210002140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210002140 is an abundant number, since it is smaller than the sum of its proper divisors (36378004020).

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

20210002140 is a wasteful number, since it uses less digits than its factorization.

20210002140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336833381 (or 336833379 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20210002140 its reverse (4120001202), we get a palindrome (24330003342).

The spelling of 20210002140 in words is "twenty billion, two hundred ten million, two thousand, one hundred forty".