42845265 has 12 divisors (see below), whose sum is σ = 74265204. Its totient is φ = 22850784.

The previous prime is 42845249. The next prime is 42845281. The reversal of 42845265 is 56254824.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42845249) and next prime (42845281).

It can be written as a sum of positive squares in 2 ways, for example, as 17564481 + 25280784 = 4191^2 + 5028^2 .

It is not a de Polignac number, because 42845265 - 2⁴ = 42845249 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 476014 + ... + 476103.

It is an arithmetic number, because the mean of its divisors is an integer number (6188767).

Almost surely, 2^42845265 is an apocalyptic number.

42845265 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42845265 is a deficient number, since it is larger than the sum of its proper divisors (31419939).

42845265 is a wasteful number, since it uses less digits than its factorization.

42845265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952128 (or 952125 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 42845265 is about 6545.6294578902. The cubic root of 42845265 is about 349.9190697234.

The spelling of 42845265 in words is "forty-two million, eight hundred forty-five thousand, two hundred sixty-five".