123460742057 has 2 divisors, whose sum is σ = 123460742058. Its totient is φ = 123460742056.

The previous prime is 123460742023. The next prime is 123460742059. The reversal of 123460742057 is 750247064321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123422931856 + 37810201 = 351316^2 + 6149^2 .

It is a cyclic number.

It is not a de Polignac number, because 123460742057 - 2¹⁴ = 123460725673 is a prime.

Together with 123460742059, 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 (123460742059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61730371028 + 61730371029.

It is an arithmetic number, because the mean of its divisors is an integer number (61730371029).

Almost surely, 2^123460742057 is an apocalyptic number.

It is an amenable number.

123460742057 is a deficient number, since it is larger than the sum of its proper divisors (1).

123460742057 is an equidigital number, since it uses as much as digits as its factorization.

123460742057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 41.

The spelling of 123460742057 in words is "one hundred twenty-three billion, four hundred sixty million, seven hundred forty-two thousand, fifty-seven".