124354991 has 2 divisors, whose sum is σ = 124354992. Its totient is φ = 124354990.

The previous prime is 124354969. The next prime is 124355003. The reversal of 124354991 is 199453421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 124354991 - 2¹⁸ = 124092847 is a prime.

It is a super-2 number, since 2×124354991² = 30928327573220162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124354931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62177495 + 62177496.

It is an arithmetic number, because the mean of its divisors is an integer number (62177496).

Almost surely, 2^124354991 is an apocalyptic number.

124354991 is a deficient number, since it is larger than the sum of its proper divisors (1).

124354991 is an equidigital number, since it uses as much as digits as its factorization.

124354991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 38.

The square root of 124354991 is about 11151.4569003337. The cubic root of 124354991 is about 499.1385045035.

The spelling of 124354991 in words is "one hundred twenty-four million, three hundred fifty-four thousand, nine hundred ninety-one".