124542613 has 4 divisors (see below), whose sum is σ = 134122828. Its totient is φ = 114962400.

The previous prime is 124542589. The next prime is 124542623. The reversal of 124542613 is 316245421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48539089 + 76003524 = 6967^2 + 8718^2 .

It is a cyclic number.

It is not a de Polignac number, because 124542613 - 2⁵ = 124542581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124542623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4790088 + ... + 4790113.

It is an arithmetic number, because the mean of its divisors is an integer number (33530707).

Almost surely, 2^124542613 is an apocalyptic number.

124542613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

124542613 is a deficient number, since it is larger than the sum of its proper divisors (9580215).

124542613 is an equidigital number, since it uses as much as digits as its factorization.

124542613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9580214.

The product of its digits is 5760, while the sum is 28.

The square root of 124542613 is about 11159.8661730327. The cubic root of 124542613 is about 499.3894053185.

The spelling of 124542613 in words is "one hundred twenty-four million, five hundred forty-two thousand, six hundred thirteen".