74169642 has 8 divisors (see below), whose sum is σ = 148339296. Its totient is φ = 24723212.

The previous prime is 74169629. The next prime is 74169643. The reversal of 74169642 is 24696147.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

74169642 is an admirable number.

It is a super-2 number, since 2×74169642² = 11002271588816328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74169642.

It is not an unprimeable number, because it can be changed into a prime (74169643) 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, 6180798 + ... + 6180809.

It is an arithmetic number, because the mean of its divisors is an integer number (18542412).

Almost surely, 2^74169642 is an apocalyptic number.

74169642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74169642 is a wasteful number, since it uses less digits than its factorization.

74169642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12361612.

The product of its digits is 72576, while the sum is 39.

The square root of 74169642 is about 8612.1798634260. The cubic root of 74169642 is about 420.1542177430.

The spelling of 74169642 in words is "seventy-four million, one hundred sixty-nine thousand, six hundred forty-two".