42169247 has 8 divisors (see below), whose sum is σ = 43059600. Its totient is φ = 41284864.

The previous prime is 42169223. The next prime is 42169249. The reversal of 42169247 is 74296124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42169247 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 (42169249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14543 + ... + 17199.

It is an arithmetic number, because the mean of its divisors is an integer number (5382450).

Almost surely, 2^42169247 is an apocalyptic number.

42169247 is a deficient number, since it is larger than the sum of its proper divisors (890353).

42169247 is a wasteful number, since it uses less digits than its factorization.

42169247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2985.

The product of its digits is 24192, while the sum is 35.

The square root of 42169247 is about 6493.7852597695. The cubic root of 42169247 is about 348.0689491030.

The spelling of 42169247 in words is "forty-two million, one hundred sixty-nine thousand, two hundred forty-seven".