123422657720 has 48 divisors (see below), whose sum is σ = 278552380680. Its totient is φ = 49218164160.

The previous prime is 123422657719. The next prime is 123422657789. The reversal of 123422657720 is 27756224321.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 4368359 + ... + 4396521.

Almost surely, 2^123422657720 is an apocalyptic number.

123422657720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123422657720 is an abundant number, since it is smaller than the sum of its proper divisors (155129722960).

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

123422657720 is an equidigital number, since it uses as much as digits as its factorization.

123422657720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28836 (or 28501 counting only the distinct ones).

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

The spelling of 123422657720 in words is "one hundred twenty-three billion, four hundred twenty-two million, six hundred fifty-seven thousand, seven hundred twenty".