42700885 has 24 divisors (see below), whose sum is σ = 55494936. Its totient is φ = 31518720.

The previous prime is 42700871. The next prime is 42700901. The reversal of 42700885 is 58800724.

It can be written as a sum of positive squares in 4 ways, for example, as 6195121 + 36505764 = 2489^2 + 6042^2 .

It is not a de Polignac number, because 42700885 - 2¹³ = 42692693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42700885.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73717 + ... + 74293.

It is an arithmetic number, because the mean of its divisors is an integer number (2312289).

Almost surely, 2^42700885 is an apocalyptic number.

It is an amenable number.

42700885 is a deficient number, since it is larger than the sum of its proper divisors (12794051).

42700885 is a wasteful number, since it uses less digits than its factorization.

42700885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 42700885 is about 6534.5914179848. The cubic root of 42700885 is about 349.5255748943.

The spelling of 42700885 in words is "forty-two million, seven hundred thousand, eight hundred eighty-five".