124152242251421 has 4 divisors (see below), whose sum is σ = 131455315325052. Its totient is φ = 116849169177792.

The previous prime is 124152242251403. The next prime is 124152242251451.

124152242251421 is nontrivially palindromic in base 10.

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 110513476226521 + 13638766024900 = 10512539^2 + 3693070^2 .

It is a cyclic number.

It is not a de Polignac number, because 124152242251421 - 2³⁸ = 123877364344477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124152242251451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3651536536790 + ... + 3651536536823.

It is an arithmetic number, because the mean of its divisors is an integer number (32863828831263).

Almost surely, 2^{124152242251421} is an apocalyptic number.

It is an amenable number.

124152242251421 is a deficient number, since it is larger than the sum of its proper divisors (7303073073631).

124152242251421 is an equidigital number, since it uses as much as digits as its factorization.

124152242251421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7303073073630.

The product of its digits is 102400, while the sum is 38.

The spelling of 124152242251421 in words is "one hundred twenty-four trillion, one hundred fifty-two billion, two hundred forty-two million, two hundred fifty-one thousand, four hundred twenty-one".