42475690 has 16 divisors (see below), whose sum is σ = 80953992. Its totient is φ = 15990784.

The previous prime is 42475669. The next prime is 42475709. The reversal of 42475690 is 9657424.

It can be written as a sum of positive squares in 4 ways, for example, as 40819321 + 1656369 = 6389^2 + 1287^2 .

It is a super-2 number, since 2×42475690² = 3608368481952200, which contains 22 as substring.

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, 124759 + ... + 125098.

Almost surely, 2^42475690 is an apocalyptic number.

42475690 is a deficient number, since it is larger than the sum of its proper divisors (38478302).

42475690 is a wasteful number, since it uses less digits than its factorization.

42475690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249881.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 42475690 is about 6517.3376466161. The cubic root of 42475690 is about 348.9100514493.

The spelling of 42475690 in words is "forty-two million, four hundred seventy-five thousand, six hundred ninety".