124135013 has 2 divisors, whose sum is σ = 124135014. Its totient is φ = 124135012.

The previous prime is 124135009. The next prime is 124135021. The reversal of 124135013 is 310531421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114105124 + 10029889 = 10682^2 + 3167^2 .

It is a cyclic number.

It is not a de Polignac number, because 124135013 - 2² = 124135009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124135093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62067506 + 62067507.

It is an arithmetic number, because the mean of its divisors is an integer number (62067507).

Almost surely, 2^124135013 is an apocalyptic number.

It is an amenable number.

124135013 is a deficient number, since it is larger than the sum of its proper divisors (1).

124135013 is an equidigital number, since it uses as much as digits as its factorization.

124135013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 124135013 is about 11141.5893390485. The cubic root of 124135013 is about 498.8440134499.

Adding to 124135013 its reverse (310531421), we get a palindrome (434666434).

The spelling of 124135013 in words is "one hundred twenty-four million, one hundred thirty-five thousand, thirteen".