74122379 has 2 divisors, whose sum is σ = 74122380. Its totient is φ = 74122378.

The previous prime is 74122351. The next prime is 74122393. The reversal of 74122379 is 97322147.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74122379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74122309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37061189 + 37061190.

It is an arithmetic number, because the mean of its divisors is an integer number (37061190).

Almost surely, 2^74122379 is an apocalyptic number.

74122379 is a deficient number, since it is larger than the sum of its proper divisors (1).

74122379 is an equidigital number, since it uses as much as digits as its factorization.

74122379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 35.

The square root of 74122379 is about 8609.4354634900. The cubic root of 74122379 is about 420.0649540509.

The spelling of 74122379 in words is "seventy-four million, one hundred twenty-two thousand, three hundred seventy-nine".