124142513 has 4 divisors (see below), whose sum is σ = 135428208. Its totient is φ = 112856820.

The previous prime is 124142509. The next prime is 124142531. The reversal of 124142513 is 315241421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 124142513 - 2² = 124142509 is a prime.

It is a super-2 number, since 2×124142513² = 30822727067910338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124142563) 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, 5642831 + ... + 5642852.

It is an arithmetic number, because the mean of its divisors is an integer number (33857052).

Almost surely, 2^124142513 is an apocalyptic number.

It is an amenable number.

124142513 is a deficient number, since it is larger than the sum of its proper divisors (11285695).

124142513 is a wasteful number, since it uses less digits than its factorization.

124142513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11285694.

The product of its digits is 960, while the sum is 23.

The square root of 124142513 is about 11141.9259107212. The cubic root of 124142513 is about 498.8540596479.

Adding to 124142513 its reverse (315241421), we get a palindrome (439383934).

The spelling of 124142513 in words is "one hundred twenty-four million, one hundred forty-two thousand, five hundred thirteen".