40513143 has 16 divisors (see below), whose sum is σ = 61491456. Its totient is φ = 23485440.

The previous prime is 40513133. The next prime is 40513153. The reversal of 40513143 is 34131504.

It is an interprime number because it is at equal distance from previous prime (40513133) and next prime (40513153).

It is not a de Polignac number, because 40513143 - 2⁹ = 40512631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40513133) 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, 25930 + ... + 27447.

It is an arithmetic number, because the mean of its divisors is an integer number (3843216).

Almost surely, 2^40513143 is an apocalyptic number.

40513143 is a deficient number, since it is larger than the sum of its proper divisors (20978313).

40513143 is a wasteful number, since it uses less digits than its factorization.

40513143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53414.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 40513143 is about 6364.9935585199. The cubic root of 40513143 is about 343.4514168453.

Adding to 40513143 its reverse (34131504), we get a palindrome (74644647).

The spelling of 40513143 in words is "forty million, five hundred thirteen thousand, one hundred forty-three".