74217242 has 8 divisors (see below), whose sum is σ = 121446432. Its totient is φ = 33735100.

The previous prime is 74217217. The next prime is 74217263. The reversal of 74217242 is 24271247.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1686734 + ... + 1686777.

It is an arithmetic number, because the mean of its divisors is an integer number (15180804).

Almost surely, 2^74217242 is an apocalyptic number.

74217242 is a deficient number, since it is larger than the sum of its proper divisors (47229190).

74217242 is a wasteful number, since it uses less digits than its factorization.

74217242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3373524.

The product of its digits is 6272, while the sum is 29.

The square root of 74217242 is about 8614.9429481570. The cubic root of 74217242 is about 420.2440795940.

Adding to 74217242 its reverse (24271247), we get a palindrome (98488489).

The spelling of 74217242 in words is "seventy-four million, two hundred seventeen thousand, two hundred forty-two".