40142863 has 2 divisors, whose sum is σ = 40142864. Its totient is φ = 40142862.

The previous prime is 40142857. The next prime is 40142929. The reversal of 40142863 is 36824104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40142863 is a prime.

It is a super-2 number, since 2×40142863² = 3222898899673538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40142803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20071431 + 20071432.

It is an arithmetic number, because the mean of its divisors is an integer number (20071432).

Almost surely, 2^40142863 is an apocalyptic number.

40142863 is a deficient number, since it is larger than the sum of its proper divisors (1).

40142863 is an equidigital number, since it uses as much as digits as its factorization.

40142863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 40142863 is about 6335.8395655193. The cubic root of 40142863 is about 342.4018593908.

Adding to 40142863 its reverse (36824104), we get a palindrome (76966967).

It can be divided in two parts, 401 and 42863, that added together give a square (43264 = 208²).

The spelling of 40142863 in words is "forty million, one hundred forty-two thousand, eight hundred sixty-three".