42681975 has 24 divisors (see below), whose sum is σ = 80649600. Its totient is φ = 19511520.

The previous prime is 42681973. The next prime is 42681983. The reversal of 42681975 is 57918624.

It is not a de Polignac number, because 42681975 - 2¹ = 42681973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42681971) 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, 40125 + ... + 41174.

It is an arithmetic number, because the mean of its divisors is an integer number (3360400).

Almost surely, 2^42681975 is an apocalyptic number.

42681975 is a deficient number, since it is larger than the sum of its proper divisors (37967625).

42681975 is a wasteful number, since it uses less digits than its factorization.

42681975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81319 (or 81314 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 42681975 is about 6533.1443425046. The cubic root of 42681975 is about 349.4739717129.

The spelling of 42681975 in words is "forty-two million, six hundred eighty-one thousand, nine hundred seventy-five".