74750129 has 4 divisors (see below), whose sum is σ = 75436020. Its totient is φ = 74064240.

The previous prime is 74750113. The next prime is 74750131. The reversal of 74750129 is 92105747.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37540129 + 37210000 = 6127^2 + 6100^2 .

It is a cyclic number.

It is not a de Polignac number, because 74750129 - 2⁴ = 74750113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74750189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342782 + ... + 342999.

It is an arithmetic number, because the mean of its divisors is an integer number (18859005).

Almost surely, 2^74750129 is an apocalyptic number.

It is an amenable number.

74750129 is a deficient number, since it is larger than the sum of its proper divisors (685891).

74750129 is a wasteful number, since it uses less digits than its factorization.

74750129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685890.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 74750129 is about 8645.8156931547. The cubic root of 74750129 is about 421.2474796669.

The spelling of 74750129 in words is "seventy-four million, seven hundred fifty thousand, one hundred twenty-nine".