42842742 has 8 divisors (see below), whose sum is σ = 85685496. Its totient is φ = 14280912.

The previous prime is 42842729. The next prime is 42842797. The reversal of 42842742 is 24724824.

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

42842742 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 3570223 + ... + 3570234.

It is an arithmetic number, because the mean of its divisors is an integer number (10710687).

Almost surely, 2^42842742 is an apocalyptic number.

42842742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42842742 is a wasteful number, since it uses less digits than its factorization.

42842742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7140462.

The product of its digits is 28672, while the sum is 33.

The square root of 42842742 is about 6545.4367310364. The cubic root of 42842742 is about 349.9122011064.

The spelling of 42842742 in words is "forty-two million, eight hundred forty-two thousand, seven hundred forty-two".