40106143 has 16 divisors (see below), whose sum is σ = 51169536. Its totient is φ = 30522240.

The previous prime is 40106137. The next prime is 40106147. The reversal of 40106143 is 34160104.

It is a happy number.

It is not a de Polignac number, because 40106143 - 2⁹ = 40105631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40106143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40106147) 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, 2746 + ... + 9367.

It is an arithmetic number, because the mean of its divisors is an integer number (3198096).

Almost surely, 2^40106143 is an apocalyptic number.

40106143 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

40106143 is a deficient number, since it is larger than the sum of its proper divisors (11063393).

40106143 is a wasteful number, since it uses less digits than its factorization.

40106143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12174.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 40106143 is about 6332.9411018894. The cubic root of 40106143 is about 342.2974254522.

Adding to 40106143 its reverse (34160104), we get a palindrome (74266247).

It can be divided in two parts, 401061 and 43, that added together give a palindrome (401104).

The spelling of 40106143 in words is "forty million, one hundred six thousand, one hundred forty-three".