123429725 has 12 divisors (see below), whose sum is σ = 153784800. Its totient is φ = 98271600.

The previous prime is 123429697. The next prime is 123429731. The reversal of 123429725 is 527924321.

It is a happy number.

It is not a de Polignac number, because 123429725 - 2²⁶ = 56320861 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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, 6425 + ... + 16974.

It is an arithmetic number, because the mean of its divisors is an integer number (12815400).

Almost surely, 2^123429725 is an apocalyptic number.

It is an amenable number.

123429725 is a deficient number, since it is larger than the sum of its proper divisors (30355075).

123429725 is a wasteful number, since it uses less digits than its factorization.

123429725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23620 (or 23615 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 123429725 is about 11109.8931137973. The cubic root of 123429725 is about 497.8974711374.

The spelling of 123429725 in words is "one hundred twenty-three million, four hundred twenty-nine thousand, seven hundred twenty-five".