42534985 has 8 divisors (see below), whose sum is σ = 51568776. Its totient is φ = 33676800.

The previous prime is 42534979. The next prime is 42534997. The reversal of 42534985 is 58943524.

It can be written as a sum of positive squares in 4 ways, for example, as 13601344 + 28933641 = 3688^2 + 5379^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-42534985 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43366 + ... + 44335.

It is an arithmetic number, because the mean of its divisors is an integer number (6446097).

Almost surely, 2^42534985 is an apocalyptic number.

It is an amenable number.

42534985 is a deficient number, since it is larger than the sum of its proper divisors (9033791).

42534985 is an equidigital number, since it uses as much as digits as its factorization.

42534985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87803.

The product of its digits is 172800, while the sum is 40.

The square root of 42534985 is about 6521.8850802510. The cubic root of 42534985 is about 349.0723325252.

The spelling of 42534985 in words is "forty-two million, five hundred thirty-four thousand, nine hundred eighty-five".