74342253 has 4 divisors (see below), whose sum is σ = 99123008. Its totient is φ = 49561500.

The previous prime is 74342189. The next prime is 74342291. The reversal of 74342253 is 35224347.

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 not a de Polignac number, because 74342253 - 2⁶ = 74342189 is a prime.

It is a super-2 number, since 2×74342253² = 11053541162232018, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 74342253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74342053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12390373 + ... + 12390378.

It is an arithmetic number, because the mean of its divisors is an integer number (24780752).

Almost surely, 2^74342253 is an apocalyptic number.

It is an amenable number.

74342253 is a deficient number, since it is larger than the sum of its proper divisors (24780755).

74342253 is a wasteful number, since it uses less digits than its factorization.

74342253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24780754.

The product of its digits is 20160, while the sum is 30.

The square root of 74342253 is about 8622.1953700899. The cubic root of 74342253 is about 420.4798992957.

The spelling of 74342253 in words is "seventy-four million, three hundred forty-two thousand, two hundred fifty-three".