123964961240 has 32 divisors (see below), whose sum is σ = 285724121760. Its totient is φ = 48376569600.

The previous prime is 123964961233. The next prime is 123964961243. The reversal of 123964961240 is 42169469321.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 37792556 + ... + 37795835.

It is an arithmetic number, because the mean of its divisors is an integer number (8928878805).

Almost surely, 2^123964961240 is an apocalyptic number.

123964961240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123964961240 is an abundant number, since it is smaller than the sum of its proper divisors (161759160520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123964961240 is a wasteful number, since it uses less digits than its factorization.

123964961240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75588443 (or 75588439 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 123964961240 in words is "one hundred twenty-three billion, nine hundred sixty-four million, nine hundred sixty-one thousand, two hundred forty".