124990601919 has 4 divisors (see below), whose sum is σ = 166654135896. Its totient is φ = 83327067944.

The previous prime is 124990601917. The next prime is 124990601951. The reversal of 124990601919 is 919106099421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 919106099421 = 3 ⋅306368699807.

It is a cyclic number.

It is not a de Polignac number, because 124990601919 - 2¹ = 124990601917 is a prime.

It is a super-2 number, since 2×124990601919² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124990601917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20831766984 + ... + 20831766989.

It is an arithmetic number, because the mean of its divisors is an integer number (41663533974).

Almost surely, 2^124990601919 is an apocalyptic number.

124990601919 is a deficient number, since it is larger than the sum of its proper divisors (41663533977).

124990601919 is an equidigital number, since it uses as much as digits as its factorization.

124990601919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41663533976.

The product of its (nonzero) digits is 314928, while the sum is 51.

The spelling of 124990601919 in words is "one hundred twenty-four billion, nine hundred ninety million, six hundred one thousand, nine hundred nineteen".