74451427 has 2 divisors, whose sum is σ = 74451428. Its totient is φ = 74451426.

The previous prime is 74451359. The next prime is 74451467. The reversal of 74451427 is 72415447.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74451427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74451392 and 74451401.

It is not a weakly prime, because it can be changed into another prime (74451467) 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, 37225713 + 37225714.

It is an arithmetic number, because the mean of its divisors is an integer number (37225714).

Almost surely, 2^74451427 is an apocalyptic number.

74451427 is a deficient number, since it is larger than the sum of its proper divisors (1).

74451427 is an equidigital number, since it uses as much as digits as its factorization.

74451427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31360, while the sum is 34.

The square root of 74451427 is about 8628.5240336920. The cubic root of 74451427 is about 420.6856280604.

The spelling of 74451427 in words is "seventy-four million, four hundred fifty-one thousand, four hundred twenty-seven".