42202690 has 8 divisors (see below), whose sum is σ = 75964860. Its totient is φ = 16881072.

The previous prime is 42202679. The next prime is 42202703. The reversal of 42202690 is 9620224.

It can be written as a sum of positive squares in 2 ways, for example, as 41589601 + 613089 = 6449^2 + 783^2 .

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

It is a super-2 number, since 2×42202690² = 3562134086472200, which contains 22 as substring.

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, 2110125 + ... + 2110144.

Almost surely, 2^42202690 is an apocalyptic number.

42202690 is a deficient number, since it is larger than the sum of its proper divisors (33762170).

42202690 is a wasteful number, since it uses less digits than its factorization.

42202690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4220276.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 42202690 is about 6496.3597498907. The cubic root of 42202690 is about 348.1609386833.

The spelling of 42202690 in words is "forty-two million, two hundred two thousand, six hundred ninety".