42284991 has 24 divisors (see below), whose sum is σ = 65992320. Its totient is φ = 24012912.

The previous prime is 42284989. The next prime is 42284999. The reversal of 42284991 is 19948224.

It is not a de Polignac number, because 42284991 - 2¹ = 42284989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42284999) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25510 + ... + 27116.

It is an arithmetic number, because the mean of its divisors is an integer number (2749680).

Almost surely, 2^42284991 is an apocalyptic number.

42284991 is a deficient number, since it is larger than the sum of its proper divisors (23707329).

42284991 is a wasteful number, since it uses less digits than its factorization.

42284991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803 (or 1796 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 42284991 is about 6502.6910583235. The cubic root of 42284991 is about 348.3871121584.

The spelling of 42284991 in words is "forty-two million, two hundred eighty-four thousand, nine hundred ninety-one".