42252165 has 16 divisors (see below), whose sum is σ = 75115200. Its totient is φ = 22534416.

The previous prime is 42252151. The next prime is 42252179. The reversal of 42252165 is 56125224.

It is an interprime number because it is at equal distance from previous prime (42252151) and next prime (42252179).

It is not a de Polignac number, because 42252165 - 2²⁴ = 25474949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156355 + ... + 156624.

It is an arithmetic number, because the mean of its divisors is an integer number (4694700).

Almost surely, 2^42252165 is an apocalyptic number.

42252165 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42252165 is a deficient number, since it is larger than the sum of its proper divisors (32863035).

42252165 is a wasteful number, since it uses less digits than its factorization.

42252165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312993 (or 312987 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 42252165 is about 6500.1665363281. The cubic root of 42252165 is about 348.2969374049.

Adding to 42252165 its reverse (56125224), we get a palindrome (98377389).

The spelling of 42252165 in words is "forty-two million, two hundred fifty-two thousand, one hundred sixty-five".