42981895 has 16 divisors (see below), whose sum is σ = 59230080. Its totient is φ = 29613600.

The previous prime is 42981893. The next prime is 42981919. The reversal of 42981895 is 59818924.

It is not a de Polignac number, because 42981895 - 2¹ = 42981893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42981893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19521 + ... + 21610.

It is an arithmetic number, because the mean of its divisors is an integer number (3701880).

Almost surely, 2^42981895 is an apocalyptic number.

42981895 is a deficient number, since it is larger than the sum of its proper divisors (16248185).

42981895 is a wasteful number, since it uses less digits than its factorization.

42981895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41166.

The product of its digits is 207360, while the sum is 46.

The square root of 42981895 is about 6556.0578856505. The cubic root of 42981895 is about 350.2906293517.

The spelling of 42981895 in words is "forty-two million, nine hundred eighty-one thousand, eight hundred ninety-five".