74227129 has 4 divisors (see below), whose sum is σ = 78133840. Its totient is φ = 70320420.

The previous prime is 74227121. The next prime is 74227177. The reversal of 74227129 is 92172247.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74227129 - 2³ = 74227121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74227094 and 74227103.

It is not an unprimeable number, because it can be changed into a prime (74227121) 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, 1953327 + ... + 1953364.

It is an arithmetic number, because the mean of its divisors is an integer number (19533460).

Almost surely, 2^74227129 is an apocalyptic number.

It is an amenable number.

74227129 is a deficient number, since it is larger than the sum of its proper divisors (3906711).

74227129 is a wasteful number, since it uses less digits than its factorization.

74227129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906710.

The product of its digits is 14112, while the sum is 34.

The square root of 74227129 is about 8615.5167575718. The cubic root of 74227129 is about 420.2627399871.

It can be divided in two parts, 7 and 4227129, that added together give a square (4227136 = 2056²).

The spelling of 74227129 in words is "seventy-four million, two hundred twenty-seven thousand, one hundred twenty-nine".