124042691 has 2 divisors, whose sum is σ = 124042692. Its totient is φ = 124042690.

The previous prime is 124042663. The next prime is 124042733. The reversal of 124042691 is 196240421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 124042691 - 2¹⁰ = 124041667 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (124042601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62021345 + 62021346.

It is an arithmetic number, because the mean of its divisors is an integer number (62021346).

Almost surely, 2^124042691 is an apocalyptic number.

124042691 is a deficient number, since it is larger than the sum of its proper divisors (1).

124042691 is an equidigital number, since it uses as much as digits as its factorization.

124042691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 124042691 is about 11137.4454431885. The cubic root of 124042691 is about 498.7203156099.

The spelling of 124042691 in words is "one hundred twenty-four million, forty-two thousand, six hundred ninety-one".