124642619 has 2 divisors, whose sum is σ = 124642620. Its totient is φ = 124642618.

The previous prime is 124642577. The next prime is 124642627. The reversal of 124642619 is 916246421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 124642619 - 2¹² = 124638523 is a prime.

It is a super-2 number, since 2×124642619² = 31071564942358322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (124642019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62321309 + 62321310.

It is an arithmetic number, because the mean of its divisors is an integer number (62321310).

Almost surely, 2^124642619 is an apocalyptic number.

124642619 is a deficient number, since it is larger than the sum of its proper divisors (1).

124642619 is an equidigital number, since it uses as much as digits as its factorization.

124642619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The square root of 124642619 is about 11164.3458832123. The cubic root of 124642619 is about 499.5230371576.

The spelling of 124642619 in words is "one hundred twenty-four million, six hundred forty-two thousand, six hundred nineteen".