42742874 has 4 divisors (see below), whose sum is σ = 64114314. Its totient is φ = 21371436.

The previous prime is 42742859. The next prime is 42742877. The reversal of 42742874 is 47824724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 36517849 + 6225025 = 6043^2 + 2495^2 .

It is not an unprimeable number, because it can be changed into a prime (42742877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10685717 + ... + 10685720.

Almost surely, 2^42742874 is an apocalyptic number.

42742874 is a deficient number, since it is larger than the sum of its proper divisors (21371440).

42742874 is a wasteful number, since it uses less digits than its factorization.

42742874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21371439.

The product of its digits is 100352, while the sum is 38.

The square root of 42742874 is about 6537.8034537603. The cubic root of 42742874 is about 349.6401035235.

The spelling of 42742874 in words is "forty-two million, seven hundred forty-two thousand, eight hundred seventy-four".