105219992 has 16 divisors (see below), whose sum is σ = 197489040. Its totient is φ = 52556256.

The previous prime is 105219979. The next prime is 105219997. The reversal of 105219992 is 299912501.

It is a super-2 number, since 2×105219992² = 22142493432960128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105219997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2318 + ... + 14690.

It is an arithmetic number, because the mean of its divisors is an integer number (12343065).

Almost surely, 2^105219992 is an apocalyptic number.

It is an amenable number.

105219992 is a deficient number, since it is larger than the sum of its proper divisors (92269048).

105219992 is a wasteful number, since it uses less digits than its factorization.

105219992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13442 (or 13438 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 105219992 is about 10257.6796596501. The cubic root of 105219992 is about 472.0986459529.

The spelling of 105219992 in words is "one hundred five million, two hundred nineteen thousand, nine hundred ninety-two".