42986661 has 8 divisors (see below), whose sum is σ = 57364224. Its totient is φ = 28633440.

The previous prime is 42986641. The next prime is 42986663. The reversal of 42986661 is 16668924.

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

It is not a de Polignac number, because 42986661 - 2¹⁰ = 42985637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42986663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1461 + ... + 9386.

It is an arithmetic number, because the mean of its divisors is an integer number (7170528).

Almost surely, 2^42986661 is an apocalyptic number.

It is an amenable number.

42986661 is a deficient number, since it is larger than the sum of its proper divisors (14377563).

42986661 is a wasteful number, since it uses less digits than its factorization.

42986661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12171.

The product of its digits is 124416, while the sum is 42.

The square root of 42986661 is about 6556.4213561973. The cubic root of 42986661 is about 350.3035760699.

The spelling of 42986661 in words is "forty-two million, nine hundred eighty-six thousand, six hundred sixty-one".