40870143 has 16 divisors (see below), whose sum is σ = 60712800. Its totient is φ = 27172800.

The previous prime is 40870127. The next prime is 40870157. The reversal of 40870143 is 34107804.

It is not a de Polignac number, because 40870143 - 2⁴ = 40870127 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40870243) 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 in 15 ways as a sum of consecutive naturals, for example, 9193 + ... + 12893.

It is an arithmetic number, because the mean of its divisors is an integer number (3794550).

Almost surely, 2^40870143 is an apocalyptic number.

40870143 is a deficient number, since it is larger than the sum of its proper divisors (19842657).

40870143 is a wasteful number, since it uses less digits than its factorization.

40870143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4119 (or 4113 counting only the distinct ones).

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

The square root of 40870143 is about 6392.9760675291. The cubic root of 40870143 is about 344.4572941867.

Adding to 40870143 its reverse (34107804), we get a palindrome (74977947).

The spelling of 40870143 in words is "forty million, eight hundred seventy thousand, one hundred forty-three".