42881895 has 24 divisors (see below), whose sum is σ = 84947616. Its totient is φ = 19603008.

The previous prime is 42881819. The next prime is 42881899. The reversal of 42881895 is 59818824.

It is a happy number.

It is not a de Polignac number, because 42881895 - 2⁷ = 42881767 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 42881895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42881899) 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, 67752 + ... + 68381.

It is an arithmetic number, because the mean of its divisors is an integer number (3539484).

Almost surely, 2^42881895 is an apocalyptic number.

42881895 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42881895 is a deficient number, since it is larger than the sum of its proper divisors (42065721).

42881895 is a wasteful number, since it uses less digits than its factorization.

42881895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136151 (or 136148 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The square root of 42881895 is about 6548.4269103350. The cubic root of 42881895 is about 350.0187608991.

The spelling of 42881895 in words is "forty-two million, eight hundred eighty-one thousand, eight hundred ninety-five".