74729042 has 12 divisors (see below), whose sum is σ = 119076090. Its totient is φ = 35166336.

The previous prime is 74729009. The next prime is 74729051. The reversal of 74729042 is 24092747.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 74632321 + 96721 = 8639^2 + 311^2 .

It is a junction number, because it is equal to n+sod(n) for n = 74728993 and 74729011.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 64067 + ... + 65222.

Almost surely, 2^74729042 is an apocalyptic number.

74729042 is a deficient number, since it is larger than the sum of its proper divisors (44347048).

74729042 is a wasteful number, since it uses less digits than its factorization.

74729042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129325 (or 129308 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 74729042 is about 8644.5961154932. The cubic root of 74729042 is about 421.2078646582.

The spelling of 74729042 in words is "seventy-four million, seven hundred twenty-nine thousand, forty-two".