123461729 has 16 divisors (see below), whose sum is σ = 131651520. Its totient is φ = 115577280.

The previous prime is 123461719. The next prime is 123461759. The reversal of 123461729 is 927164321.

It is a cyclic number.

It is not a de Polignac number, because 123461729 - 2⁸ = 123461473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123461719) 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, 225434 + ... + 225980.

It is an arithmetic number, because the mean of its divisors is an integer number (8228220).

Almost surely, 2^123461729 is an apocalyptic number.

It is an amenable number.

123461729 is a deficient number, since it is larger than the sum of its proper divisors (8189791).

123461729 is a wasteful number, since it uses less digits than its factorization.

123461729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800.

The product of its digits is 18144, while the sum is 35.

The square root of 123461729 is about 11111.3333583328. Note that the first 4 decimals coincide. The cubic root of 123461729 is about 497.9405005715.

The spelling of 123461729 in words is "one hundred twenty-three million, four hundred sixty-one thousand, seven hundred twenty-nine".