40126143 has 4 divisors (see below), whose sum is σ = 53501528. Its totient is φ = 26750760.

The previous prime is 40126133. The next prime is 40126159. The reversal of 40126143 is 34162104.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40126143 - 2⁸ = 40125887 is a prime.

It is a super-2 number, since 2×40126143² = 3220214704112898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40126123) 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, 6687688 + ... + 6687693.

It is an arithmetic number, because the mean of its divisors is an integer number (13375382).

Almost surely, 2^40126143 is an apocalyptic number.

40126143 is a deficient number, since it is larger than the sum of its proper divisors (13375385).

40126143 is a wasteful number, since it uses less digits than its factorization.

40126143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13375384.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 40126143 is about 6334.5199502409. The cubic root of 40126143 is about 342.3543145831.

Adding to 40126143 its reverse (34162104), we get a palindrome (74288247).

The spelling of 40126143 in words is "forty million, one hundred twenty-six thousand, one hundred forty-three".