40550143 has 4 divisors (see below), whose sum is σ = 41412960. Its totient is φ = 39687328.

The previous prime is 40550131. The next prime is 40550179. The reversal of 40550143 is 34105504.

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

It is a cyclic number.

It is not a de Polignac number, because 40550143 - 2²¹ = 38452991 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40550243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431338 + ... + 431431.

It is an arithmetic number, because the mean of its divisors is an integer number (10353240).

Almost surely, 2^40550143 is an apocalyptic number.

40550143 is a deficient number, since it is larger than the sum of its proper divisors (862817).

40550143 is an equidigital number, since it uses as much as digits as its factorization.

40550143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862816.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 40550143 is about 6367.8994181755. The cubic root of 40550143 is about 343.5559412446. Note that the first 3 decimals are identical.

Adding to 40550143 its reverse (34105504), we get a palindrome (74655647).

The spelling of 40550143 in words is "forty million, five hundred fifty thousand, one hundred forty-three".