123872051 has 2 divisors, whose sum is σ = 123872052. Its totient is φ = 123872050.

The previous prime is 123872009. The next prime is 123872053. The reversal of 123872051 is 150278321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123872051 - 2⁶ = 123871987 is a prime.

It is a Sophie Germain prime.

Together with 123872053, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123872053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61936025 + 61936026.

It is an arithmetic number, because the mean of its divisors is an integer number (61936026).

Almost surely, 2^123872051 is an apocalyptic number.

123872051 is a deficient number, since it is larger than the sum of its proper divisors (1).

123872051 is an equidigital number, since it uses as much as digits as its factorization.

123872051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 123872051 is about 11129.7821631872. The cubic root of 123872051 is about 498.4915215623.

The spelling of 123872051 in words is "one hundred twenty-three million, eight hundred seventy-two thousand, fifty-one".