124158719381 has 2 divisors, whose sum is σ = 124158719382. Its totient is φ = 124158719380.

The previous prime is 124158719371. The next prime is 124158719453. The reversal of 124158719381 is 183917851421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78551272900 + 45607446481 = 280270^2 + 213559^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124158719381 is a prime.

It is a super-2 number, since 2×124158719381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124158719371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62079359690 + 62079359691.

It is an arithmetic number, because the mean of its divisors is an integer number (62079359691).

Almost surely, 2^124158719381 is an apocalyptic number.

It is an amenable number.

124158719381 is a deficient number, since it is larger than the sum of its proper divisors (1).

124158719381 is an equidigital number, since it uses as much as digits as its factorization.

124158719381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 50.

The spelling of 124158719381 in words is "one hundred twenty-four billion, one hundred fifty-eight million, seven hundred nineteen thousand, three hundred eighty-one".