40265143 has 2 divisors, whose sum is σ = 40265144. Its totient is φ = 40265142.

The previous prime is 40265131. The next prime is 40265149. The reversal of 40265143 is 34156204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40265143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40265149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20132571 + 20132572.

It is an arithmetic number, because the mean of its divisors is an integer number (20132572).

Almost surely, 2^40265143 is an apocalyptic number.

40265143 is a deficient number, since it is larger than the sum of its proper divisors (1).

40265143 is an equidigital number, since it uses as much as digits as its factorization.

40265143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 40265143 is about 6345.4820935844. The cubic root of 40265143 is about 342.7491727567.

The spelling of 40265143 in words is "forty million, two hundred sixty-five thousand, one hundred forty-three".