124156661 has 8 divisors (see below), whose sum is σ = 132422040. Its totient is φ = 115998208.

The previous prime is 124156631. The next prime is 124156717. The reversal of 124156661 is 166651421.

It can be written as a sum of positive squares in 4 ways, for example, as 26522500 + 97634161 = 5150^2 + 9881^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 124156661 - 2¹⁰ = 124155637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124156601) 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, 24326 + ... + 28983.

It is an arithmetic number, because the mean of its divisors is an integer number (16552755).

Almost surely, 2^124156661 is an apocalyptic number.

It is an amenable number.

124156661 is a deficient number, since it is larger than the sum of its proper divisors (8265379).

124156661 is a wasteful number, since it uses less digits than its factorization.

124156661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53463.

The product of its digits is 8640, while the sum is 32.

The square root of 124156661 is about 11142.5607918467. The cubic root of 124156661 is about 498.8730096942.

The spelling of 124156661 in words is "one hundred twenty-four million, one hundred fifty-six thousand, six hundred sixty-one".