102472123 has 4 divisors (see below), whose sum is σ = 110354608. Its totient is φ = 94589640.

The previous prime is 102472103. The next prime is 102472147. The reversal of 102472123 is 321274201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321274201 = 103 ⋅3119167.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102472123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102472094 and 102472103.

It is not an unprimeable number, because it can be changed into a prime (102472103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3941223 + ... + 3941248.

It is an arithmetic number, because the mean of its divisors is an integer number (27588652).

Almost surely, 2^102472123 is an apocalyptic number.

102472123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

102472123 is a deficient number, since it is larger than the sum of its proper divisors (7882485).

102472123 is an equidigital number, since it uses as much as digits as its factorization.

102472123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7882484.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 102472123 is about 10122.8515251386. The cubic root of 102472123 is about 467.9526503220.

The spelling of 102472123 in words is "one hundred two million, four hundred seventy-two thousand, one hundred twenty-three".