42042370 has 8 divisors (see below), whose sum is σ = 75676284. Its totient is φ = 16816944.

The previous prime is 42042349. The next prime is 42042389. The reversal of 42042370 is 7324024.

It can be written as a sum of positive squares in 2 ways, for example, as 40462321 + 1580049 = 6361^2 + 1257^2 .

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

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, 2102109 + ... + 2102128.

Almost surely, 2^42042370 is an apocalyptic number.

42042370 is a deficient number, since it is larger than the sum of its proper divisors (33633914).

42042370 is a wasteful number, since it uses less digits than its factorization.

42042370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4204244.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 42042370 is about 6484.0087908639. The cubic root of 42042370 is about 347.7195134975.

Adding to 42042370 its reverse (7324024), we get a palindrome (49366394).

The spelling of 42042370 in words is "forty-two million, forty-two thousand, three hundred seventy".