101440920 has 64 divisors (see below), whose sum is σ = 347800320. Its totient is φ = 23186304.

The previous prime is 101440919. The next prime is 101440957. The reversal of 101440920 is 29044101.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59542 + ... + 61221.

It is an arithmetic number, because the mean of its divisors is an integer number (5434380).

Almost surely, 2^101440920 is an apocalyptic number.

101440920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101440920 is an abundant number, since it is smaller than the sum of its proper divisors (246359400).

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

101440920 is a wasteful number, since it uses less digits than its factorization.

101440920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120784 (or 120780 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 101440920 is about 10071.7883218424. The cubic root of 101440920 is about 466.3776464351.

The spelling of 101440920 in words is "one hundred one million, four hundred forty thousand, nine hundred twenty".