124478649 has 9 divisors (see below), whose sum is σ = 179850853. Its totient is φ = 82963452.

The previous prime is 124478639. The next prime is 124478663. The reversal of 124478649 is 946874421.

The square root of 124478649 is 11157.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 124478649 - 2⁵ = 124478617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124478639) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 31612 + ... + 35330.

Almost surely, 2^124478649 is an apocalyptic number.

124478649 is the 11157-th square number.

124478649 is the 5579-th centered octagonal number.

It is an amenable number.

124478649 is a deficient number, since it is larger than the sum of its proper divisors (55372204).

124478649 is an frugal number, since it uses more digits than its factorization.

124478649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7444 (or 3722 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The cubic root of 124478649 is about 499.3038966634.

The spelling of 124478649 in words is "one hundred twenty-four million, four hundred seventy-eight thousand, six hundred forty-nine".