42891075 has 72 divisors (see below), whose sum is σ = 82534400. Its totient is φ = 21228480.

The previous prime is 42891049. The next prime is 42891089. The reversal of 42891075 is 57019824.

It is not a de Polignac number, because 42891075 - 2⁹ = 42890563 is a prime.

It is a plaindrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 337662 + ... + 337788.

Almost surely, 2^42891075 is an apocalyptic number.

42891075 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42891075 is a deficient number, since it is larger than the sum of its proper divisors (39643325).

42891075 is a wasteful number, since it uses less digits than its factorization.

42891075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 42891075 is about 6549.1278045248. The cubic root of 42891075 is about 350.0437360311.

The spelling of 42891075 in words is "forty-two million, eight hundred ninety-one thousand, seventy-five".