124904891 has 2 divisors, whose sum is σ = 124904892. Its totient is φ = 124904890.

The previous prime is 124904887. The next prime is 124904893. The reversal of 124904891 is 198409421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 124904891 - 2² = 124904887 is a prime.

It is a Sophie Germain prime.

Together with 124904893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (124904893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62452445 + 62452446.

It is an arithmetic number, because the mean of its divisors is an integer number (62452446).

Almost surely, 2^124904891 is an apocalyptic number.

124904891 is a deficient number, since it is larger than the sum of its proper divisors (1).

124904891 is an equidigital number, since it uses as much as digits as its factorization.

124904891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 124904891 is about 11176.0856743316. The cubic root of 124904891 is about 499.8731558238.

The spelling of 124904891 in words is "one hundred twenty-four million, nine hundred four thousand, eight hundred ninety-one".