42033986 has 4 divisors (see below), whose sum is σ = 63050982. Its totient is φ = 21016992.

The previous prime is 42033977. The next prime is 42033989. The reversal of 42033986 is 68933024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42003361 + 30625 = 6481^2 + 175^2 .

It is not an unprimeable number, because it can be changed into a prime (42033989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10508495 + ... + 10508498.

Almost surely, 2^42033986 is an apocalyptic number.

42033986 is a deficient number, since it is larger than the sum of its proper divisors (21016996).

42033986 is a wasteful number, since it uses less digits than its factorization.

42033986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21016995.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 42033986 is about 6483.3622450084. The cubic root of 42033986 is about 347.6963981323.

The spelling of 42033986 in words is "forty-two million, thirty-three thousand, nine hundred eighty-six".