123154452 has 24 divisors (see below), whose sum is σ = 319289600. Its totient is φ = 41051448.

The previous prime is 123154441. The next prime is 123154459. The reversal of 123154452 is 254451321.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 in 7 ways as a sum of consecutive naturals, for example, 570052 + ... + 570267.

Almost surely, 2^123154452 is an apocalyptic number.

123154452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123154452 is an abundant number, since it is smaller than the sum of its proper divisors (196135148).

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

123154452 is a wasteful number, since it uses less digits than its factorization.

123154452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140332 (or 1140324 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 123154452 is about 11097.4975557555. The cubic root of 123154452 is about 497.5270586194.

The spelling of 123154452 in words is "one hundred twenty-three million, one hundred fifty-four thousand, four hundred fifty-two".