102870999 has 32 divisors (see below), whose sum is σ = 190010880. Its totient is φ = 53438400.

The previous prime is 102870983. The next prime is 102871057. The reversal of 102870999 is 999078201.

It is not a de Polignac number, because 102870999 - 2⁴ = 102870983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102870919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22662 + ... + 26819.

It is an arithmetic number, because the mean of its divisors is an integer number (5937840).

Almost surely, 2^102870999 is an apocalyptic number.

102870999 is a deficient number, since it is larger than the sum of its proper divisors (87139881).

102870999 is a wasteful number, since it uses less digits than its factorization.

102870999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49508 (or 49502 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 102870999 is about 10142.5341507929. The cubic root of 102870999 is about 468.5590377352.

It can be divided in two parts, 1028 and 70999, that added together give a palindrome (72027).

The spelling of 102870999 in words is "one hundred two million, eight hundred seventy thousand, nine hundred ninety-nine".