124243642151 has 4 divisors (see below), whose sum is σ = 124355675400. Its totient is φ = 124131608904.

The previous prime is 124243642147. The next prime is 124243642153. The reversal of 124243642151 is 151246342421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151246342421 = 41 ⋅3688935181.

It is a cyclic number.

It is not a de Polignac number, because 124243642151 - 2² = 124243642147 is a prime.

It is a super-2 number, since 2×124243642151² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124243642153) 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, 56014961 + ... + 56017178.

It is an arithmetic number, because the mean of its divisors is an integer number (31088918850).

Almost surely, 2^124243642151 is an apocalyptic number.

124243642151 is a deficient number, since it is larger than the sum of its proper divisors (112033249).

124243642151 is a wasteful number, since it uses less digits than its factorization.

124243642151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112033248.

The product of its digits is 46080, while the sum is 35.

Adding to 124243642151 its reverse (151246342421), we get a palindrome (275489984572).

The spelling of 124243642151 in words is "one hundred twenty-four billion, two hundred forty-three million, six hundred forty-two thousand, one hundred fifty-one".