42740842 has 8 divisors (see below), whose sum is σ = 67485600. Its totient is φ = 20245644.

The previous prime is 42740833. The next prime is 42740851. The reversal of 42740842 is 24804724.

It is an interprime number because it is at equal distance from previous prime (42740833) and next prime (42740851).

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562342 + ... + 562417.

It is an arithmetic number, because the mean of its divisors is an integer number (8435700).

Almost surely, 2^42740842 is an apocalyptic number.

42740842 is a deficient number, since it is larger than the sum of its proper divisors (24744758).

42740842 is a wasteful number, since it uses less digits than its factorization.

42740842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124780.

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 42740842 is about 6537.6480480368. The cubic root of 42740842 is about 349.6345627952.

The spelling of 42740842 in words is "forty-two million, seven hundred forty thousand, eight hundred forty-two".