42201985 has 24 divisors (see below), whose sum is σ = 59216616. Its totient is φ = 28788480.

The previous prime is 42201967. The next prime is 42202001. The reversal of 42201985 is 58910224.

It can be written as a sum of positive squares in 4 ways, for example, as 94864 + 42107121 = 308^2 + 6489^2 .

It is not a de Polignac number, because 42201985 - 2⁵ = 42201953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68539 + ... + 69151.

It is an arithmetic number, because the mean of its divisors is an integer number (2467359).

Almost surely, 2^42201985 is an apocalyptic number.

It is an amenable number.

42201985 is a deficient number, since it is larger than the sum of its proper divisors (17014631).

42201985 is a wasteful number, since it uses less digits than its factorization.

42201985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913 (or 906 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 42201985 is about 6496.3054885065. The cubic root of 42201985 is about 348.1589999852.

The spelling of 42201985 in words is "forty-two million, two hundred one thousand, nine hundred eighty-five".