123154456 has 8 divisors (see below), whose sum is σ = 230914620. Its totient is φ = 61577224.

The previous prime is 123154441. The next prime is 123154459. The reversal of 123154456 is 654451321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123154459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7697146 + ... + 7697161.

Almost surely, 2^123154456 is an apocalyptic number.

It is an amenable number.

123154456 is a deficient number, since it is larger than the sum of its proper divisors (107760164).

123154456 is a wasteful number, since it uses less digits than its factorization.

123154456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15394313 (or 15394309 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 123154456 is about 11097.4977359763. The cubic root of 123154456 is about 497.5270640058.

The spelling of 123154456 in words is "one hundred twenty-three million, one hundred fifty-four thousand, four hundred fifty-six".