40161143 has 8 divisors (see below), whose sum is σ = 45323280. Its totient is φ = 35250880.

The previous prime is 40161113. The next prime is 40161167. The reversal of 40161143 is 34116104.

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

It is a cyclic number.

It is not a de Polignac number, because 40161143 - 2¹⁴ = 40144759 is a prime.

It is a super-2 number, since 2×40161143² = 3225834814132898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40161103) 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, 62630 + ... + 63267.

It is an arithmetic number, because the mean of its divisors is an integer number (5665410).

Almost surely, 2^40161143 is an apocalyptic number.

40161143 is a deficient number, since it is larger than the sum of its proper divisors (5162137).

40161143 is a wasteful number, since it uses less digits than its factorization.

40161143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125937.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 40161143 is about 6337.2819883606. The cubic root of 40161143 is about 342.4538250927.

Adding to 40161143 its reverse (34116104), we get a palindrome (74277247).

It can be divided in two parts, 40161 and 143, that added together give a palindrome (40304).

The spelling of 40161143 in words is "forty million, one hundred sixty-one thousand, one hundred forty-three".