123420317870 has 32 divisors (see below), whose sum is σ = 234706896000. Its totient is φ = 46651607296.

The previous prime is 123420317851. The next prime is 123420317873. The reversal of 123420317870 is 78713024321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123420317873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4513895 + ... + 4541154.

It is an arithmetic number, because the mean of its divisors is an integer number (7334590500).

Almost surely, 2^123420317870 is an apocalyptic number.

123420317870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123420317870 is a deficient number, since it is larger than the sum of its proper divisors (111286578130).

123420317870 is a wasteful number, since it uses less digits than its factorization.

123420317870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9055132.

The product of its (nonzero) digits is 56448, while the sum is 38.

The spelling of 123420317870 in words is "one hundred twenty-three billion, four hundred twenty million, three hundred seventeen thousand, eight hundred seventy".