40122843 has 4 divisors (see below), whose sum is σ = 53497128. Its totient is φ = 26748560.

The previous prime is 40122821. The next prime is 40122847. The reversal of 40122843 is 34822104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40122843 - 2²⁴ = 23345627 is a prime.

It is a super-3 number, since 3×40122843³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (40122847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6687138 + ... + 6687143.

It is an arithmetic number, because the mean of its divisors is an integer number (13374282).

Almost surely, 2^40122843 is an apocalyptic number.

40122843 is a deficient number, since it is larger than the sum of its proper divisors (13374285).

40122843 is a wasteful number, since it uses less digits than its factorization.

40122843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13374284.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 40122843 is about 6334.2594673726. The cubic root of 40122843 is about 342.3449291789.

Adding to 40122843 its reverse (34822104), we get a palindrome (74944947).

The spelling of 40122843 in words is "forty million, one hundred twenty-two thousand, eight hundred forty-three".