123219456 has 40 divisors (see below), whose sum is σ = 328268424. Its totient is φ = 41072640.

The previous prime is 123219443. The next prime is 123219457. The reversal of 123219456 is 654912321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123219457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38575 + ... + 41646.

Almost surely, 2^123219456 is an apocalyptic number.

123219456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123219456 is an abundant number, since it is smaller than the sum of its proper divisors (205048968).

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

123219456 is an frugal number, since it uses more digits than its factorization.

123219456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80242 (or 80226 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 123219456 is about 11100.4259377737. The cubic root of 123219456 is about 497.6145789644.

The spelling of 123219456 in words is "one hundred twenty-three million, two hundred nineteen thousand, four hundred fifty-six".