124999540 has 24 divisors (see below), whose sum is σ = 264956832. Its totient is φ = 49531680.

The previous prime is 124999517. The next prime is 124999561. The reversal of 124999540 is 45999421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27066 + ... + 31345.

It is an arithmetic number, because the mean of its divisors is an integer number (11039868).

Almost surely, 2^124999540 is an apocalyptic number.

124999540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124999540 is an abundant number, since it is smaller than the sum of its proper divisors (139957292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

124999540 is a wasteful number, since it uses less digits than its factorization.

124999540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58527 (or 58525 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 124999540 is about 11180.3193156546. The cubic root of 124999540 is about 499.9993866659. Note that the first 3 decimals are identical.

The spelling of 124999540 in words is "one hundred twenty-four million, nine hundred ninety-nine thousand, five hundred forty".