40078143 has 24 divisors (see below), whose sum is σ = 66338688. Its totient is φ = 22840272.

The previous prime is 40078111. The next prime is 40078147. The reversal of 40078143 is 34187004.

It is not a de Polignac number, because 40078143 - 2⁵ = 40078111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40078147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33880 + ... + 35042.

It is an arithmetic number, because the mean of its divisors is an integer number (2764112).

Almost surely, 2^40078143 is an apocalyptic number.

40078143 is a deficient number, since it is larger than the sum of its proper divisors (26260545).

40078143 is a wasteful number, since it uses less digits than its factorization.

40078143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723 (or 1720 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 40078143 is about 6330.7300526874. The cubic root of 40078143 is about 342.2177488866.

The spelling of 40078143 in words is "forty million, seventy-eight thousand, one hundred forty-three".