74129805 has 48 divisors (see below), whose sum is σ = 136206720. Its totient is φ = 37217664.

The previous prime is 74129777. The next prime is 74129813. The reversal of 74129805 is 50892147.

It is not a de Polignac number, because 74129805 - 2⁷ = 74129677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74129805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68811 + ... + 69879.

It is an arithmetic number, because the mean of its divisors is an integer number (2837640).

Almost surely, 2^74129805 is an apocalyptic number.

It is an amenable number.

74129805 is a deficient number, since it is larger than the sum of its proper divisors (62076915).

74129805 is a wasteful number, since it uses less digits than its factorization.

74129805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170 (or 1167 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 74129805 is about 8609.8667237072. The cubic root of 74129805 is about 420.0789817451.

The spelling of 74129805 in words is "seventy-four million, one hundred twenty-nine thousand, eight hundred five".