42845986 has 4 divisors (see below), whose sum is σ = 64268982. Its totient is φ = 21422992.

The previous prime is 42845983. The next prime is 42846019. The reversal of 42845986 is 68954824.

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., 28291761 + 14554225 = 5319^2 + 3815^2 .

It is not an unprimeable number, because it can be changed into a prime (42845983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10711495 + ... + 10711498.

Almost surely, 2^42845986 is an apocalyptic number.

42845986 is a deficient number, since it is larger than the sum of its proper divisors (21422996).

42845986 is a wasteful number, since it uses less digits than its factorization.

42845986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21422995.

The product of its digits is 552960, while the sum is 46.

The square root of 42845986 is about 6545.6845325756. The cubic root of 42845986 is about 349.9210325247.

The spelling of 42845986 in words is "forty-two million, eight hundred forty-five thousand, nine hundred eighty-six".