42891370 has 8 divisors (see below), whose sum is σ = 77204484. Its totient is φ = 17156544.

The previous prime is 42891347. The next prime is 42891413. The reversal of 42891370 is 7319824.

42891370 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 41177889 + 1713481 = 6417^2 + 1309^2 .

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2144559 + ... + 2144578.

Almost surely, 2^42891370 is an apocalyptic number.

42891370 is a deficient number, since it is larger than the sum of its proper divisors (34313114).

42891370 is a wasteful number, since it uses less digits than its factorization.

42891370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4289144.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 42891370 is about 6549.1503265691. The cubic root of 42891370 is about 350.0445385498.

The spelling of 42891370 in words is "forty-two million, eight hundred ninety-one thousand, three hundred seventy".