123964961242 has 24 divisors (see below), whose sum is σ = 191744427636. Its totient is φ = 60096999744.

The previous prime is 123964961233. The next prime is 123964961243. The reversal of 123964961242 is 242169469321.

It can be written as a sum of positive squares in 2 ways, for example, as 113534628601 + 10430332641 = 336949^2 + 102129^2 .

It is not an unprimeable number, because it can be changed into a prime (123964961243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 386268 + ... + 630184.

Almost surely, 2^123964961242 is an apocalyptic number.

123964961242 is a deficient number, since it is larger than the sum of its proper divisors (67779466394).

123964961242 is an equidigital number, since it uses as much as digits as its factorization.

123964961242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244110 (or 244051 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 49.

The spelling of 123964961242 in words is "one hundred twenty-three billion, nine hundred sixty-four million, nine hundred sixty-one thousand, two hundred forty-two".