40455143 has 2 divisors, whose sum is σ = 40455144. Its totient is φ = 40455142.

The previous prime is 40455119. The next prime is 40455169. The reversal of 40455143 is 34155404.

It is an a-pointer prime, because the next prime (40455169) can be obtained adding 40455143 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40455143 - 2¹⁰ = 40454119 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40455193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20227571 + 20227572.

It is an arithmetic number, because the mean of its divisors is an integer number (20227572).

Almost surely, 2^40455143 is an apocalyptic number.

40455143 is a deficient number, since it is larger than the sum of its proper divisors (1).

40455143 is an equidigital number, since it uses as much as digits as its factorization.

40455143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 40455143 is about 6360.4357555124. The cubic root of 40455143 is about 343.2874396402.

The spelling of 40455143 in words is "forty million, four hundred fifty-five thousand, one hundred forty-three".