101942640 has 60 divisors (see below), whose sum is σ = 342359784. Its totient is φ = 27184512.

The previous prime is 101942593. The next prime is 101942653. The reversal of 101942640 is 46249101.

101942640 is a `hidden beast` number, since 1 + 0 + 19 + 4 + 2 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70074 + ... + 71513.

Almost surely, 2^101942640 is an apocalyptic number.

101942640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101942640 is an abundant number, since it is smaller than the sum of its proper divisors (240417144).

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

101942640 is a wasteful number, since it uses less digits than its factorization.

101942640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141606 (or 141597 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 101942640 is about 10096.6647958620. The cubic root of 101942640 is about 467.1452731527.

The spelling of 101942640 in words is "one hundred one million, nine hundred forty-two thousand, six hundred forty".