124065491 has 4 divisors (see below), whose sum is σ = 135344184. Its totient is φ = 112786800.

The previous prime is 124065443. The next prime is 124065517. The reversal of 124065491 is 194560421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194560421 = 11 ⋅17687311.

It is a cyclic number.

It is not a de Polignac number, because 124065491 - 2¹⁸ = 123803347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124065091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5639330 + ... + 5639351.

It is an arithmetic number, because the mean of its divisors is an integer number (33836046).

Almost surely, 2^124065491 is an apocalyptic number.

124065491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

124065491 is a deficient number, since it is larger than the sum of its proper divisors (11278693).

124065491 is a wasteful number, since it uses less digits than its factorization.

124065491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11278692.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 124065491 is about 11138.4689701951. The cubic root of 124065491 is about 498.7508699470.

The spelling of 124065491 in words is "one hundred twenty-four million, sixty-five thousand, four hundred ninety-one".