42742975 has 24 divisors (see below), whose sum is σ = 59067648. Its totient is φ = 30415200.

The previous prime is 42742961. The next prime is 42742979. The reversal of 42742975 is 57924724.

It is not a de Polignac number, because 42742975 - 2¹⁷ = 42611903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42742979) 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, 11272 + ... + 14578.

It is an arithmetic number, because the mean of its divisors is an integer number (2461152).

Almost surely, 2^42742975 is an apocalyptic number.

42742975 is a deficient number, since it is larger than the sum of its proper divisors (16324673).

42742975 is a wasteful number, since it uses less digits than its factorization.

42742975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3375 (or 3370 counting only the distinct ones).

The product of its digits is 141120, while the sum is 40.

The square root of 42742975 is about 6537.8111780626. The cubic root of 42742975 is about 349.6403789192.

The spelling of 42742975 in words is "forty-two million, seven hundred forty-two thousand, nine hundred seventy-five".