42045975 has 18 divisors (see below), whose sum is σ = 75309416. Its totient is φ = 22424400.

The previous prime is 42045973. The next prime is 42045977. The reversal of 42045975 is 57954024.

It is an interprime number because it is at equal distance from previous prime (42045973) and next prime (42045977).

It is not a de Polignac number, because 42045975 - 2¹ = 42045973 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 (42045973) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 93211 + ... + 93660.

Almost surely, 2^42045975 is an apocalyptic number.

42045975 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42045975 is a deficient number, since it is larger than the sum of its proper divisors (33263441).

42045975 is a wasteful number, since it uses less digits than its factorization.

42045975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186887 (or 186879 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 42045975 is about 6484.2867765083. The cubic root of 42045975 is about 347.7294518289.

Adding to 42045975 its reverse (57954024), we get a palindrome (99999999).

The spelling of 42045975 in words is "forty-two million, forty-five thousand, nine hundred seventy-five".