42987286 has 4 divisors (see below), whose sum is σ = 64480932. Its totient is φ = 21493642.

The previous prime is 42987233. The next prime is 42987289. The reversal of 42987286 is 68278924.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42987289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10746820 + ... + 10746823.

It is an arithmetic number, because the mean of its divisors is an integer number (16120233).

Almost surely, 2^42987286 is an apocalyptic number.

42987286 is a deficient number, since it is larger than the sum of its proper divisors (21493646).

42987286 is a wasteful number, since it uses less digits than its factorization.

42987286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21493645.

The product of its digits is 387072, while the sum is 46.

The square root of 42987286 is about 6556.4690192206. The cubic root of 42987286 is about 350.3052737955.

The spelling of 42987286 in words is "forty-two million, nine hundred eighty-seven thousand, two hundred eighty-six".