124219639 has 2 divisors, whose sum is σ = 124219640. Its totient is φ = 124219638.

The previous prime is 124219633. The next prime is 124219687. The reversal of 124219639 is 936912421.

It is a weak prime.

It is an emirp because it is prime and its reverse (936912421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124219639 - 2³ = 124219631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124219598 and 124219607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124219631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62109819 + 62109820.

It is an arithmetic number, because the mean of its divisors is an integer number (62109820).

Almost surely, 2^124219639 is an apocalyptic number.

124219639 is a deficient number, since it is larger than the sum of its proper divisors (1).

124219639 is an equidigital number, since it uses as much as digits as its factorization.

124219639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 37.

The square root of 124219639 is about 11145.3864446236. The cubic root of 124219639 is about 498.9573459229.

The spelling of 124219639 in words is "one hundred twenty-four million, two hundred nineteen thousand, six hundred thirty-nine".