124721379 has 12 divisors (see below), whose sum is σ = 180504376. Its totient is φ = 82985472.

The previous prime is 124721357. The next prime is 124721381. The reversal of 124721379 is 973127421.

124721379 = T₃₀₂₆ + T₃₀₂₇ + ... + T₃₀₅₂.

It is not a de Polignac number, because 124721379 - 2²³ = 116332771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124721309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8542 + ... + 17955.

Almost surely, 2^124721379 is an apocalyptic number.

124721379 is a deficient number, since it is larger than the sum of its proper divisors (55782997).

124721379 is a wasteful number, since it uses less digits than its factorization.

124721379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27026 (or 27023 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 124721379 is about 11167.8726264226. The cubic root of 124721379 is about 499.6282289745.

The spelling of 124721379 in words is "one hundred twenty-four million, seven hundred twenty-one thousand, three hundred seventy-nine".