40407143 has 8 divisors (see below), whose sum is σ = 47253888. Its totient is φ = 33828984.

The previous prime is 40407137. The next prime is 40407151. The reversal of 40407143 is 34170404.

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

It is not a de Polignac number, because 40407143 - 2¹⁶ = 40341607 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 (40407163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66821 + ... + 67422.

It is an arithmetic number, because the mean of its divisors is an integer number (5906736).

Almost surely, 2^40407143 is an apocalyptic number.

40407143 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

40407143 is a deficient number, since it is larger than the sum of its proper divisors (6846745).

40407143 is a wasteful number, since it uses less digits than its factorization.

40407143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134293.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 40407143 is about 6356.6613092094. The cubic root of 40407143 is about 343.1516158022.

Adding to 40407143 its reverse (34170404), we get a palindrome (74577547).

The spelling of 40407143 in words is "forty million, four hundred seven thousand, one hundred forty-three".