42117201 has 12 divisors (see below), whose sum is σ = 69526912. Its totient is φ = 24066936.

The previous prime is 42117199. The next prime is 42117223. The reversal of 42117201 is 10271124.

It is not a de Polignac number, because 42117201 - 2¹ = 42117199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42117001) 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, 334201 + ... + 334326.

Almost surely, 2^42117201 is an apocalyptic number.

It is an amenable number.

42117201 is a deficient number, since it is larger than the sum of its proper divisors (27409711).

42117201 is a wasteful number, since it uses less digits than its factorization.

42117201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668540 (or 668537 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 42117201 is about 6489.7766525513. The cubic root of 42117201 is about 347.9256926165.

Adding to 42117201 its reverse (10271124), we get a palindrome (52388325).

The spelling of 42117201 in words is "forty-two million, one hundred seventeen thousand, two hundred one".