124991541 has 18 divisors (see below), whose sum is σ = 182198562. Its totient is φ = 82568160.

The previous prime is 124991527. The next prime is 124991551. The reversal of 124991541 is 145199421.

It is a happy number.

124991541 is a `hidden beast` number, since 1 + 24 + 9 + 91 + 541 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 11249316 + 113742225 = 3354^2 + 10665^2 .

It is not a de Polignac number, because 124991541 - 2⁷ = 124991413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124991496 and 124991505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124991521) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 451095 + ... + 451371.

Almost surely, 2^124991541 is an apocalyptic number.

It is an amenable number.

124991541 is a deficient number, since it is larger than the sum of its proper divisors (57207021).

124991541 is an equidigital number, since it uses as much as digits as its factorization.

124991541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741 (or 461 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 124991541 is about 11179.9615831183. The cubic root of 124991541 is about 499.9887210789.

The spelling of 124991541 in words is "one hundred twenty-four million, nine hundred ninety-one thousand, five hundred forty-one".