74206642 has 8 divisors (see below), whose sum is σ = 111365100. Its totient is φ = 37084944.

The previous prime is 74206577. The next prime is 74206651. The reversal of 74206642 is 24660247.

It can be written as a sum of positive squares in 2 ways, for example, as 73977201 + 229441 = 8601^2 + 479^2 .

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

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, 3417 + ... + 12652.

Almost surely, 2^74206642 is an apocalyptic number.

74206642 is a deficient number, since it is larger than the sum of its proper divisors (37158458).

74206642 is a wasteful number, since it uses less digits than its factorization.

74206642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18380.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 74206642 is about 8614.3277160786. The cubic root of 74206642 is about 420.2240716677.

Adding to 74206642 its reverse (24660247), we get a palindrome (98866889).

The spelling of 74206642 in words is "seventy-four million, two hundred six thousand, six hundred forty-two".