42284997 has 10 divisors (see below), whose sum is σ = 63166598. Its totient is φ = 28189944.

The previous prime is 42284989. The next prime is 42284999. The reversal of 42284997 is 79948224.

42284997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 39012516 + 3272481 = 6246^2 + 1809^2 .

It is not a de Polignac number, because 42284997 - 2³ = 42284989 is a prime.

It is a Duffinian number.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 260938 + ... + 261099.

Almost surely, 2^42284997 is an apocalyptic number.

It is an amenable number.

42284997 is a deficient number, since it is larger than the sum of its proper divisors (20881601).

42284997 is an equidigital number, since it uses as much as digits as its factorization.

42284997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522049 (or 522040 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 42284997 is about 6502.6915196709. The cubic root of 42284997 is about 348.3871286365.

The spelling of 42284997 in words is "forty-two million, two hundred eighty-four thousand, nine hundred ninety-seven".