124142981 has 2 divisors, whose sum is σ = 124142982. Its totient is φ = 124142980.

The previous prime is 124142971. The next prime is 124143001. The reversal of 124142981 is 189241421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85192900 + 38950081 = 9230^2 + 6241^2 .

It is a cyclic number.

It is not a de Polignac number, because 124142981 - 2¹⁰ = 124141957 is a prime.

It is a super-2 number, since 2×124142981² = 30822959463132722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124142911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62071490 + 62071491.

It is an arithmetic number, because the mean of its divisors is an integer number (62071491).

Almost surely, 2^124142981 is an apocalyptic number.

It is an amenable number.

124142981 is a deficient number, since it is larger than the sum of its proper divisors (1).

124142981 is an equidigital number, since it uses as much as digits as its factorization.

124142981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 32.

The square root of 124142981 is about 11141.9469124565. The cubic root of 124142981 is about 498.8546865172.

The spelling of 124142981 in words is "one hundred twenty-four million, one hundred forty-two thousand, nine hundred eighty-one".