123574643 has 2 divisors, whose sum is σ = 123574644. Its totient is φ = 123574642.

The previous prime is 123574639. The next prime is 123574657. The reversal of 123574643 is 346475321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123574643 - 2² = 123574639 is a prime.

It is not a weakly prime, because it can be changed into another prime (123574603) 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, 61787321 + 61787322.

It is an arithmetic number, because the mean of its divisors is an integer number (61787322).

Almost surely, 2^123574643 is an apocalyptic number.

123574643 is a deficient number, since it is larger than the sum of its proper divisors (1).

123574643 is an equidigital number, since it uses as much as digits as its factorization.

123574643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 35.

The square root of 123574643 is about 11116.4132254968. The cubic root of 123574643 is about 498.0922542701.

The spelling of 123574643 in words is "one hundred twenty-three million, five hundred seventy-four thousand, six hundred forty-three".