102720995 has 16 divisors (see below), whose sum is σ = 132959232. Its totient is φ = 75734400.

The previous prime is 102720979. The next prime is 102721007. The reversal of 102720995 is 599027201.

It is not a de Polignac number, because 102720995 - 2⁴ = 102720979 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74129 + ... + 75501.

It is an arithmetic number, because the mean of its divisors is an integer number (8309952).

Almost surely, 2^102720995 is an apocalyptic number.

102720995 is a deficient number, since it is larger than the sum of its proper divisors (30238237).

102720995 is a wasteful number, since it uses less digits than its factorization.

102720995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 102720995 is about 10135.1366542341. The cubic root of 102720995 is about 468.3311797990.

It can be divided in two parts, 1027 and 20995, that added together give a palindrome (22022).

The spelling of 102720995 in words is "one hundred two million, seven hundred twenty thousand, nine hundred ninety-five".