42027161 has 4 divisors (see below), whose sum is σ = 45847824. Its totient is φ = 38206500.

The previous prime is 42027151. The next prime is 42027169. The reversal of 42027161 is 16172024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42027161 - 2¹⁴ = 42010777 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42027169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1910315 + ... + 1910336.

It is an arithmetic number, because the mean of its divisors is an integer number (11461956).

Almost surely, 2^42027161 is an apocalyptic number.

It is an amenable number.

42027161 is a deficient number, since it is larger than the sum of its proper divisors (3820663).

42027161 is a wasteful number, since it uses less digits than its factorization.

42027161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3820662.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 42027161 is about 6482.8358763739. The cubic root of 42027161 is about 347.6775787864.

Adding to 42027161 its reverse (16172024), we get a palindrome (58199185).

The spelling of 42027161 in words is "forty-two million, twenty-seven thousand, one hundred sixty-one".