74009842 has 8 divisors (see below), whose sum is σ = 114015276. Its totient is φ = 36004752.

The previous prime is 74009839. The next prime is 74009843. The reversal of 74009842 is 24890047.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 66275881 + 7733961 = 8141^2 + 2781^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 74009798 and 74009807.

It is not an unprimeable number, because it can be changed into a prime (74009843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499993 + ... + 500140.

Almost surely, 2^74009842 is an apocalyptic number.

74009842 is a deficient number, since it is larger than the sum of its proper divisors (40005434).

74009842 is a wasteful number, since it uses less digits than its factorization.

74009842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000172.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 74009842 is about 8602.8973026533. The cubic root of 74009842 is about 419.8522571807.

Adding to 74009842 its reverse (24890047), we get a palindrome (98899889).

The spelling of 74009842 in words is "seventy-four million, nine thousand, eight hundred forty-two".