74042473 has 2 divisors, whose sum is σ = 74042474. Its totient is φ = 74042472.

The previous prime is 74042461. The next prime is 74042489. The reversal of 74042473 is 37424047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73068304 + 974169 = 8548^2 + 987^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74042473 is a prime.

It is not a weakly prime, because it can be changed into another prime (74042413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37021236 + 37021237.

It is an arithmetic number, because the mean of its divisors is an integer number (37021237).

Almost surely, 2^74042473 is an apocalyptic number.

It is an amenable number.

74042473 is a deficient number, since it is larger than the sum of its proper divisors (1).

74042473 is an equidigital number, since it uses as much as digits as its factorization.

74042473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 31.

The square root of 74042473 is about 8604.7936058920. The cubic root of 74042473 is about 419.9139525158.

The spelling of 74042473 in words is "seventy-four million, forty-two thousand, four hundred seventy-three".