123670457 has 2 divisors, whose sum is σ = 123670458. Its totient is φ = 123670456.

The previous prime is 123670433. The next prime is 123670507. The reversal of 123670457 is 754076321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68376361 + 55294096 = 8269^2 + 7436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123670457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123670957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61835228 + 61835229.

It is an arithmetic number, because the mean of its divisors is an integer number (61835229).

Almost surely, 2^123670457 is an apocalyptic number.

It is an amenable number.

123670457 is a deficient number, since it is larger than the sum of its proper divisors (1).

123670457 is an equidigital number, since it uses as much as digits as its factorization.

123670457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 123670457 is about 11120.7219639734. The cubic root of 123670457 is about 498.2209534947.

The spelling of 123670457 in words is "one hundred twenty-three million, six hundred seventy thousand, four hundred fifty-seven".