42651985 has 8 divisors (see below), whose sum is σ = 52050240. Its totient is φ = 33543024.

The previous prime is 42651971. The next prime is 42652003. The reversal of 42651985 is 58915624.

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

It is a cyclic number.

It is not a de Polignac number, because 42651985 - 2¹³ = 42643793 is a prime.

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, 71997 + ... + 72586.

It is an arithmetic number, because the mean of its divisors is an integer number (6506280).

Almost surely, 2^42651985 is an apocalyptic number.

It is an amenable number.

42651985 is a deficient number, since it is larger than the sum of its proper divisors (9398255).

42651985 is a wasteful number, since it uses less digits than its factorization.

42651985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144647.

The product of its digits is 86400, while the sum is 40.

The square root of 42651985 is about 6530.8487197301. The cubic root of 42651985 is about 349.3921012427.

The spelling of 42651985 in words is "forty-two million, six hundred fifty-one thousand, nine hundred eighty-five".