102099970 has 32 divisors (see below), whose sum is σ = 213486336. Its totient is φ = 34430400.

The previous prime is 102099961. The next prime is 102099997. The reversal of 102099970 is 79990201.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 15 ways as a sum of consecutive naturals, for example, 7686 + ... + 16225.

It is an arithmetic number, because the mean of its divisors is an integer number (6671448).

Almost surely, 2^102099970 is an apocalyptic number.

102099970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102099970 is an abundant number, since it is smaller than the sum of its proper divisors (111386366).

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

102099970 is a wasteful number, since it uses less digits than its factorization.

102099970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23986.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 102099970 is about 10104.4529787614. The cubic root of 102099970 is about 467.3854676679.

The spelling of 102099970 in words is "one hundred two million, ninety-nine thousand, nine hundred seventy".