42090670 has 16 divisors (see below), whose sum is σ = 76163328. Its totient is φ = 16747360.

The previous prime is 42090649. The next prime is 42090701. The reversal of 42090670 is 7609024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9109 + ... + 12928.

It is an arithmetic number, because the mean of its divisors is an integer number (4760208).

Almost surely, 2^42090670 is an apocalyptic number.

42090670 is a deficient number, since it is larger than the sum of its proper divisors (34072658).

42090670 is a wasteful number, since it uses less digits than its factorization.

42090670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22235.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 42090670 is about 6487.7322694452. The cubic root of 42090670 is about 347.8526206864.

Adding to 42090670 its reverse (7609024), we get a palindrome (49699694).

The spelling of 42090670 in words is "forty-two million, ninety thousand, six hundred seventy".