101972540 has 12 divisors (see below), whose sum is σ = 214142376. Its totient is φ = 40789008.

The previous prime is 101972531. The next prime is 101972561. The reversal of 101972540 is 45279101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2549294 + ... + 2549333.

It is an arithmetic number, because the mean of its divisors is an integer number (17845198).

Almost surely, 2^101972540 is an apocalyptic number.

101972540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101972540 is an abundant number, since it is smaller than the sum of its proper divisors (112169836).

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

101972540 is a wasteful number, since it uses less digits than its factorization.

101972540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5098636 (or 5098634 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 101972540 is about 10098.1453742754. The cubic root of 101972540 is about 467.1909402662.

The spelling of 101972540 in words is "one hundred one million, nine hundred seventy-two thousand, five hundred forty".