42075945 has 12 divisors (see below), whose sum is σ = 72931716. Its totient is φ = 22440480.

The previous prime is 42075941. The next prime is 42075967. The reversal of 42075945 is 54957024.

It can be written as a sum of positive squares in 2 ways, for example, as 13816089 + 28259856 = 3717^2 + 5316^2 .

It is not a de Polignac number, because 42075945 - 2² = 42075941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42075941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 467466 + ... + 467555.

It is an arithmetic number, because the mean of its divisors is an integer number (6077643).

Almost surely, 2^42075945 is an apocalyptic number.

42075945 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42075945 is a deficient number, since it is larger than the sum of its proper divisors (30855771).

42075945 is a wasteful number, since it uses less digits than its factorization.

42075945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935032 (or 935029 counting only the distinct ones).

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

The square root of 42075945 is about 6486.5973360461. The cubic root of 42075945 is about 347.8120517016.

The spelling of 42075945 in words is "forty-two million, seventy-five thousand, nine hundred forty-five".