74245642 has 8 divisors (see below), whose sum is σ = 111421476. Its totient is φ = 37105152.

The previous prime is 74245621. The next prime is 74245667. The reversal of 74245642 is 24654247.

It can be written as a sum of positive squares in 2 ways, for example, as 73770921 + 474721 = 8589^2 + 689^2 .

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 = 74245598 and 74245607.

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, 2743 + ... + 12490.

Almost surely, 2^74245642 is an apocalyptic number.

74245642 is a deficient number, since it is larger than the sum of its proper divisors (37175834).

74245642 is a wasteful number, since it uses less digits than its factorization.

74245642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17672.

The product of its digits is 53760, while the sum is 34.

The square root of 74245642 is about 8616.5910892882. The cubic root of 74245642 is about 420.2976763483.

Adding to 74245642 its reverse (24654247), we get a palindrome (98899889).

The spelling of 74245642 in words is "seventy-four million, two hundred forty-five thousand, six hundred forty-two".