42406161 has 16 divisors (see below), whose sum is σ = 64713600. Its totient is φ = 24196608.

The previous prime is 42406129. The next prime is 42406193. The reversal of 42406161 is 16160424.

It is an interprime number because it is at equal distance from previous prime (42406129) and next prime (42406193).

It is not a de Polignac number, because 42406161 - 2⁵ = 42406129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42406121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21505 + ... + 23393.

It is an arithmetic number, because the mean of its divisors is an integer number (4044600).

Almost surely, 2^42406161 is an apocalyptic number.

It is an amenable number.

42406161 is a deficient number, since it is larger than the sum of its proper divisors (22307439).

42406161 is a wasteful number, since it uses less digits than its factorization.

42406161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2968.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 42406161 is about 6512.0013052824. The cubic root of 42406161 is about 348.7195690358.

Adding to 42406161 its reverse (16160424), we get a palindrome (58566585).

It can be divided in two parts, 4240 and 6161, that added together give a palindrome (10401).

The spelling of 42406161 in words is "forty-two million, four hundred six thousand, one hundred sixty-one".