124542155123 has 2 divisors, whose sum is σ = 124542155124. Its totient is φ = 124542155122.

The previous prime is 124542155113. The next prime is 124542155147. The reversal of 124542155123 is 321551245421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 124542155123 - 2¹⁴ = 124542138739 is a prime.

It is not a weakly prime, because it can be changed into another prime (124542155113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62271077561 + 62271077562.

It is an arithmetic number, because the mean of its divisors is an integer number (62271077562).

Almost surely, 2^124542155123 is an apocalyptic number.

124542155123 is a deficient number, since it is larger than the sum of its proper divisors (1).

124542155123 is an equidigital number, since it uses as much as digits as its factorization.

124542155123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48000, while the sum is 35.

The spelling of 124542155123 in words is "one hundred twenty-four billion, five hundred forty-two million, one hundred fifty-five thousand, one hundred twenty-three".