40430143 has 4 divisors (see below), whose sum is σ = 43540168. Its totient is φ = 37320120.

The previous prime is 40430111. The next prime is 40430153. The reversal of 40430143 is 34103404.

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 40430143 - 2⁵ = 40430111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40430143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40430153) 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, 1554993 + ... + 1555018.

It is an arithmetic number, because the mean of its divisors is an integer number (10885042).

Almost surely, 2^40430143 is an apocalyptic number.

40430143 is a deficient number, since it is larger than the sum of its proper divisors (3110025).

40430143 is a wasteful number, since it uses less digits than its factorization.

40430143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3110024.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40430143 is about 6358.4701776449. The cubic root of 40430143 is about 343.2167114723.

Adding to 40430143 its reverse (34103404), we get a palindrome (74533547).

The spelling of 40430143 in words is "forty million, four hundred thirty thousand, one hundred forty-three".