74240442002 has 4 divisors (see below), whose sum is σ = 111360663006. Its totient is φ = 37120221000.

The previous prime is 74240441999. The next prime is 74240442007. The reversal of 74240442002 is 20024404247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20024404247 = 19 ⋅1053916013.

It can be written as a sum of positive squares in only one way, i.e., 44504543521 + 29735898481 = 210961^2 + 172441^2 .

It is not an unprimeable number, because it can be changed into a prime (74240442007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18560110499 + ... + 18560110502.

Almost surely, 2^74240442002 is an apocalyptic number.

74240442002 is a deficient number, since it is larger than the sum of its proper divisors (37120221004).

74240442002 is a wasteful number, since it uses less digits than its factorization.

74240442002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37120221003.

The product of its (nonzero) digits is 14336, while the sum is 29.

Adding to 74240442002 its reverse (20024404247), we get a palindrome (94264846249).

The spelling of 74240442002 in words is "seventy-four billion, two hundred forty million, four hundred forty-two thousand, two".