42371690 has 16 divisors (see below), whose sum is σ = 76367880. Its totient is φ = 16926720.

The previous prime is 42371689. The next prime is 42371711. The reversal of 42371690 is 9617324.

It can be written as a sum of positive squares in 4 ways, for example, as 17581249 + 24790441 = 4193^2 + 4979^2 .

It is a super-2 number, since 2×42371690² = 3590720226912200, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 7010 + ... + 11570.

Almost surely, 2^42371690 is an apocalyptic number.

42371690 is a deficient number, since it is larger than the sum of its proper divisors (33996190).

42371690 is a wasteful number, since it uses less digits than its factorization.

42371690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5497.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 42371690 is about 6509.3540386124. The cubic root of 42371690 is about 348.6250546966.

The spelling of 42371690 in words is "forty-two million, three hundred seventy-one thousand, six hundred ninety".