74129049 has 12 divisors (see below), whose sum is σ = 108180436. Its totient is φ = 48909312.

The previous prime is 74129039. The next prime is 74129057. The reversal of 74129049 is 94092147.

It can be written as a sum of positive squares in 2 ways, for example, as 23619600 + 50509449 = 4860^2 + 7107^2 .

It is not a de Polignac number, because 74129049 - 2¹⁶ = 74063513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74129039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41584 + ... + 43329.

Almost surely, 2^74129049 is an apocalyptic number.

It is an amenable number.

74129049 is a deficient number, since it is larger than the sum of its proper divisors (34051387).

74129049 is a wasteful number, since it uses less digits than its factorization.

74129049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85016 (or 85013 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 74129049 is about 8609.8228204766. The cubic root of 74129049 is about 420.0775537059.

It can be divided in two parts, 7412 and 9049, that added together give a palindrome (16461).

The spelling of 74129049 in words is "seventy-four million, one hundred twenty-nine thousand, forty-nine".