40220143 has 2 divisors, whose sum is σ = 40220144. Its totient is φ = 40220142.

The previous prime is 40220137. The next prime is 40220183. The reversal of 40220143 is 34102204.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40220143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40220183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20110071 + 20110072.

It is an arithmetic number, because the mean of its divisors is an integer number (20110072).

Almost surely, 2^40220143 is an apocalyptic number.

40220143 is a deficient number, since it is larger than the sum of its proper divisors (1).

40220143 is an equidigital number, since it uses as much as digits as its factorization.

40220143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 40220143 is about 6341.9352724543. The cubic root of 40220143 is about 342.6214405877.

Adding to 40220143 its reverse (34102204), we get a palindrome (74322347).

The spelling of 40220143 in words is "forty million, two hundred twenty thousand, one hundred forty-three".