42739570 has 8 divisors (see below), whose sum is σ = 76931244. Its totient is φ = 17095824.

The previous prime is 42739561. The next prime is 42739573. The reversal of 42739570 is 7593724.

It can be written as a sum of positive squares in 2 ways, for example, as 41977441 + 762129 = 6479^2 + 873^2 .

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

It is not an unprimeable number, because it can be changed into a prime (42739573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2136969 + ... + 2136988.

Almost surely, 2^42739570 is an apocalyptic number.

42739570 is a deficient number, since it is larger than the sum of its proper divisors (34191674).

42739570 is a wasteful number, since it uses less digits than its factorization.

42739570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4273964.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 42739570 is about 6537.5507646213. The cubic root of 42739570 is about 349.6310942972.

The spelling of 42739570 in words is "forty-two million, seven hundred thirty-nine thousand, five hundred seventy".