124512013 has 8 divisors (see below), whose sum is σ = 126135800. Its totient is φ = 122895360.

The previous prime is 124512001. The next prime is 124512023. The reversal of 124512013 is 310215421.

It can be written as a sum of positive squares in 4 ways, for example, as 5745609 + 118766404 = 2397^2 + 10898^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124512013 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 (124512023) by changing a digit.

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, 39313 + ... + 42361.

It is an arithmetic number, because the mean of its divisors is an integer number (15766975).

Almost surely, 2^124512013 is an apocalyptic number.

It is an amenable number.

124512013 is a deficient number, since it is larger than the sum of its proper divisors (1623787).

124512013 is an equidigital number, since it uses as much as digits as its factorization.

124512013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3567.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 124512013 is about 11158.4951046277. The cubic root of 124512013 is about 499.3485021364.

Adding to 124512013 its reverse (310215421), we get a palindrome (434727434).

The spelling of 124512013 in words is "one hundred twenty-four million, five hundred twelve thousand, thirteen".