124431154042399 has 2 divisors, whose sum is σ = 124431154042400. Its totient is φ = 124431154042398.

The previous prime is 124431154042397. The next prime is 124431154042423. The reversal of 124431154042399 is 993240451134421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 124431154042399 - 2¹ = 124431154042397 is a prime.

It is a super-2 number, since 2×124431154042399² (a number of 29 digits) contains 22 as substring.

Together with 124431154042397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124431154042397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62215577021199 + 62215577021200.

It is an arithmetic number, because the mean of its divisors is an integer number (62215577021200).

Almost surely, 2^{124431154042399} is an apocalyptic number.

124431154042399 is a deficient number, since it is larger than the sum of its proper divisors (1).

124431154042399 is an equidigital number, since it uses as much as digits as its factorization.

124431154042399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 124431154042399 in words is "one hundred twenty-four trillion, four hundred thirty-one billion, one hundred fifty-four million, forty-two thousand, three hundred ninety-nine".