124661621 has 16 divisors (see below), whose sum is σ = 147773184. Its totient is φ = 102933504.

The previous prime is 124661617. The next prime is 124661639. The reversal of 124661621 is 126166421.

It is a cyclic number.

It is not a de Polignac number, because 124661621 - 2² = 124661617 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 (124661681) 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, 24341 + ... + 29013.

It is an arithmetic number, because the mean of its divisors is an integer number (9235824).

Almost surely, 2^124661621 is an apocalyptic number.

It is an amenable number.

124661621 is a deficient number, since it is larger than the sum of its proper divisors (23111563).

124661621 is a wasteful number, since it uses less digits than its factorization.

124661621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4820.

The product of its digits is 3456, while the sum is 29.

The square root of 124661621 is about 11165.1968634682. The cubic root of 124661621 is about 499.5484202743.

The spelling of 124661621 in words is "one hundred twenty-four million, six hundred sixty-one thousand, six hundred twenty-one".