40233143 has 4 divisors (see below), whose sum is σ = 40298760. Its totient is φ = 40167528.

The previous prime is 40233119. The next prime is 40233157. The reversal of 40233143 is 34133204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40233143 - 2¹⁰ = 40232119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40233163) 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, 31880 + ... + 33117.

It is an arithmetic number, because the mean of its divisors is an integer number (10074690).

Almost surely, 2^40233143 is an apocalyptic number.

40233143 is a deficient number, since it is larger than the sum of its proper divisors (65617).

40233143 is an equidigital number, since it uses as much as digits as its factorization.

40233143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65616.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 40233143 is about 6342.9601133855. The cubic root of 40233143 is about 342.6583507741.

Adding to 40233143 its reverse (34133204), we get a palindrome (74366347).

The spelling of 40233143 in words is "forty million, two hundred thirty-three thousand, one hundred forty-three".