42997210 has 8 divisors (see below), whose sum is σ = 77394996. Its totient is φ = 17198880.

The previous prime is 42997193. The next prime is 42997223. The reversal of 42997210 is 1279924.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42497361 + 499849 = 6519^2 + 707^2 .

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2149851 + ... + 2149870.

Almost surely, 2^42997210 is an apocalyptic number.

42997210 is a deficient number, since it is larger than the sum of its proper divisors (34397786).

42997210 is a wasteful number, since it uses less digits than its factorization.

42997210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4299728.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 42997210 is about 6557.2257853455. The cubic root of 42997210 is about 350.3322287581.

The spelling of 42997210 in words is "forty-two million, nine hundred ninety-seven thousand, two hundred ten".