102620123 has 2 divisors, whose sum is σ = 102620124. Its totient is φ = 102620122.

The previous prime is 102620107. The next prime is 102620209. The reversal of 102620123 is 321026201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102620123 - 2⁴ = 102620107 is a prime.

It is not a weakly prime, because it can be changed into another prime (102620723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51310061 + 51310062.

It is an arithmetic number, because the mean of its divisors is an integer number (51310062).

Almost surely, 2^102620123 is an apocalyptic number.

102620123 is a deficient number, since it is larger than the sum of its proper divisors (1).

102620123 is an equidigital number, since it uses as much as digits as its factorization.

102620123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 102620123 is about 10130.1590806858. The cubic root of 102620123 is about 468.1778292111.

Adding to 102620123 its reverse (321026201), we get a palindrome (423646324).

The spelling of 102620123 in words is "one hundred two million, six hundred twenty thousand, one hundred twenty-three".