40819143 has 8 divisors (see below), whose sum is σ = 54564208. Its totient is φ = 27143424.

The previous prime is 40819133. The next prime is 40819199. The reversal of 40819143 is 34191804.

It is a happy number.

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

It is not a de Polignac number, because 40819143 - 2⁴ = 40819127 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 40819143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40819133) 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, 15946 + ... + 18327.

It is an arithmetic number, because the mean of its divisors is an integer number (6820526).

Almost surely, 2^40819143 is an apocalyptic number.

40819143 is a deficient number, since it is larger than the sum of its proper divisors (13745065).

40819143 is a wasteful number, since it uses less digits than its factorization.

40819143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34673.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 40819143 is about 6388.9860697923. The cubic root of 40819143 is about 344.3139569977.

The spelling of 40819143 in words is "forty million, eight hundred nineteen thousand, one hundred forty-three".