40492143 has 10 divisors (see below), whose sum is σ = 60488384. Its totient is φ = 26994708.

The previous prime is 40492141. The next prime is 40492157. The reversal of 40492143 is 34129404.

It is not a de Polignac number, because 40492143 - 2¹ = 40492141 is a prime.

It is a super-2 number, since 2×40492143² = 3279227289464898, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40492141) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 249871 + ... + 250032.

Almost surely, 2^40492143 is an apocalyptic number.

40492143 is a deficient number, since it is larger than the sum of its proper divisors (19996241).

40492143 is an equidigital number, since it uses as much as digits as its factorization.

40492143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499915 (or 499906 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 40492143 is about 6363.3436965168. The cubic root of 40492143 is about 343.3920638735.

The spelling of 40492143 in words is "forty million, four hundred ninety-two thousand, one hundred forty-three".