102620245 has 32 divisors (see below), whose sum is σ = 160489728. Its totient is φ = 61129728.

The previous prime is 102620209. The next prime is 102620251. The reversal of 102620245 is 542026201.

It is a cyclic number.

It is not a de Polignac number, because 102620245 - 2¹⁵ = 102587477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1102 + ... + 14368.

It is an arithmetic number, because the mean of its divisors is an integer number (5015304).

Almost surely, 2^102620245 is an apocalyptic number.

It is an amenable number.

102620245 is a deficient number, since it is larger than the sum of its proper divisors (57869483).

102620245 is a wasteful number, since it uses less digits than its factorization.

102620245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13309.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 102620245 is about 10130.1651023071. The cubic root of 102620245 is about 468.1780147422.

Adding to 102620245 its reverse (542026201), we get a palindrome (644646446).

The spelling of 102620245 in words is "one hundred two million, six hundred twenty thousand, two hundred forty-five".