42166133 has 2 divisors, whose sum is σ = 42166134. Its totient is φ = 42166132.

The previous prime is 42166123. The next prime is 42166141. The reversal of 42166133 is 33166124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37246609 + 4919524 = 6103^2 + 2218^2 .

It is a cyclic number.

It is not a de Polignac number, because 42166133 - 2¹⁸ = 41903989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42166123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21083066 + 21083067.

It is an arithmetic number, because the mean of its divisors is an integer number (21083067).

Almost surely, 2^42166133 is an apocalyptic number.

It is an amenable number.

42166133 is a deficient number, since it is larger than the sum of its proper divisors (1).

42166133 is an equidigital number, since it uses as much as digits as its factorization.

42166133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 26.

The square root of 42166133 is about 6493.5454876362. The cubic root of 42166133 is about 348.0603811420.

Subtracting from 42166133 its reverse (33166124), we obtain a palindrome (9000009).

The spelling of 42166133 in words is "forty-two million, one hundred sixty-six thousand, one hundred thirty-three".