102423123 has 40 divisors (see below), whose sum is σ = 168315840. Its totient is φ = 61553520.

The previous prime is 102423121. The next prime is 102423127. The reversal of 102423123 is 321324201.

It is not a de Polignac number, because 102423123 - 2¹ = 102423121 is a prime.

It is a super-2 number, since 2×102423123² = 20980992250146258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102423096 and 102423105.

It is not an unprimeable number, because it can be changed into a prime (102423121) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 123436 + ... + 124262.

It is an arithmetic number, because the mean of its divisors is an integer number (4207896).

Almost surely, 2^102423123 is an apocalyptic number.

102423123 is a deficient number, since it is larger than the sum of its proper divisors (65892717).

102423123 is a wasteful number, since it uses less digits than its factorization.

102423123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 102423123 is about 10120.4309690843. The cubic root of 102423123 is about 467.8780500795.

Adding to 102423123 its reverse (321324201), we get a palindrome (423747324).

The spelling of 102423123 in words is "one hundred two million, four hundred twenty-three thousand, one hundred twenty-three".