124933381 has 4 divisors (see below), whose sum is σ = 126221452. Its totient is φ = 123645312.

The previous prime is 124933337. The next prime is 124933387. The reversal of 124933381 is 183339421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 183339421 = 29 ⋅6322049.

It can be written as a sum of positive squares in 2 ways, for example, as 76282756 + 48650625 = 8734^2 + 6975^2 .

It is a cyclic number.

It is not a de Polignac number, because 124933381 - 2²³ = 116544773 is a prime.

It is a super-2 number, since 2×124933381² = 31216699376182322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124933387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643890 + ... + 644083.

It is an arithmetic number, because the mean of its divisors is an integer number (31555363).

Almost surely, 2^124933381 is an apocalyptic number.

It is an amenable number.

124933381 is a deficient number, since it is larger than the sum of its proper divisors (1288071).

124933381 is an equidigital number, since it uses as much as digits as its factorization.

124933381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288070.

The product of its digits is 15552, while the sum is 34.

The square root of 124933381 is about 11177.3601981863. The cubic root of 124933381 is about 499.9111588821.

The spelling of 124933381 in words is "one hundred twenty-four million, nine hundred thirty-three thousand, three hundred eighty-one".