101919642 has 32 divisors (see below), whose sum is σ = 222796224. Its totient is φ = 30825600.

The previous prime is 101919637. The next prime is 101919679. The reversal of 101919642 is 246919101.

It is a super-2 number, since 2×101919642² = 20775226850816328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43542 + ... + 45822.

It is an arithmetic number, because the mean of its divisors is an integer number (6962382).

Almost surely, 2^101919642 is an apocalyptic number.

101919642 is an abundant number, since it is smaller than the sum of its proper divisors (120876582).

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

101919642 is a wasteful number, since it uses less digits than its factorization.

101919642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 101919642 is about 10095.5258406880. The cubic root of 101919642 is about 467.1101415827.

The spelling of 101919642 in words is "one hundred one million, nine hundred nineteen thousand, six hundred forty-two".