74240242 has 8 divisors (see below), whose sum is σ = 111405276. Its totient is φ = 37105152.

The previous prime is 74240219. The next prime is 74240267. The reversal of 74240242 is 24204247.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 47210641 + 27029601 = 6871^2 + 5199^2 .

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

It is a super-2 number, since 2×74240242² = 11023227064437128, which contains 22 as substring.

It is an unprimeable number.

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, 358 + ... + 12190.

Almost surely, 2^74240242 is an apocalyptic number.

74240242 is a deficient number, since it is larger than the sum of its proper divisors (37165034).

74240242 is a wasteful number, since it uses less digits than its factorization.

74240242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14972.

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 74240242 is about 8616.2777346137. The cubic root of 74240242 is about 420.2874864686.

Adding to 74240242 its reverse (24204247), we get a palindrome (98444489).

The spelling of 74240242 in words is "seventy-four million, two hundred forty thousand, two hundred forty-two".