101901040 has 40 divisors (see below), whose sum is σ = 247225248. Its totient is φ = 38987520.

The previous prime is 101901001. The next prime is 101901053. The reversal of 101901040 is 40109101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 25851 + ... + 29530.

Almost surely, 2^101901040 is an apocalyptic number.

101901040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101901040 is an abundant number, since it is smaller than the sum of its proper divisors (145324208).

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

101901040 is a wasteful number, since it uses less digits than its factorization.

101901040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55417 (or 55411 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 101901040 is about 10094.6044994343. The cubic root of 101901040 is about 467.0817214425.

The spelling of 101901040 in words is "one hundred one million, nine hundred one thousand, forty".