124002579581 has 2 divisors, whose sum is σ = 124002579582. Its totient is φ = 124002579580.

The previous prime is 124002579559. The next prime is 124002579607. The reversal of 124002579581 is 185975200421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117892656025 + 6109923556 = 343355^2 + 78166^2 .

It is an emirp because it is prime and its reverse (185975200421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124002579581 - 2¹⁸ = 124002317437 is a prime.

It is a super-2 number, since 2×124002579581² (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 (124002579521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62001289790 + 62001289791.

It is an arithmetic number, because the mean of its divisors is an integer number (62001289791).

Almost surely, 2^124002579581 is an apocalyptic number.

It is an amenable number.

124002579581 is a deficient number, since it is larger than the sum of its proper divisors (1).

124002579581 is an equidigital number, since it uses as much as digits as its factorization.

124002579581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 44.

The spelling of 124002579581 in words is "one hundred twenty-four billion, two million, five hundred seventy-nine thousand, five hundred eighty-one".