123374557 has 2 divisors, whose sum is σ = 123374558. Its totient is φ = 123374556.

The previous prime is 123374551. The next prime is 123374567. The reversal of 123374557 is 755473321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103917636 + 19456921 = 10194^2 + 4411^2 .

It is a cyclic number.

It is not a de Polignac number, because 123374557 - 2³ = 123374549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123374551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61687278 + 61687279.

It is an arithmetic number, because the mean of its divisors is an integer number (61687279).

Almost surely, 2^123374557 is an apocalyptic number.

It is an amenable number.

123374557 is a deficient number, since it is larger than the sum of its proper divisors (1).

123374557 is an equidigital number, since it uses as much as digits as its factorization.

123374557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88200, while the sum is 37.

The square root of 123374557 is about 11107.4100041369. The cubic root of 123374557 is about 497.8232801999.

It can be divided in two parts, 12 and 3374557, that added together give a square (3374569 = 1837²).

The spelling of 123374557 in words is "one hundred twenty-three million, three hundred seventy-four thousand, five hundred fifty-seven".