40034243 has 4 divisors (see below), whose sum is σ = 40083480. Its totient is φ = 39985008.

The previous prime is 40034233. The next prime is 40034251. The reversal of 40034243 is 34243004.

It is a happy number.

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 40034243 - 2⁶ = 40034179 is a prime.

It is a super-2 number, since 2×40034243² = 3205481225166098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40034213) 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, 23378 + ... + 25031.

It is an arithmetic number, because the mean of its divisors is an integer number (10020870).

Almost surely, 2^40034243 is an apocalyptic number.

40034243 is a deficient number, since it is larger than the sum of its proper divisors (49237).

40034243 is an equidigital number, since it uses as much as digits as its factorization.

40034243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49236.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 40034243 is about 6327.2618880524. The cubic root of 40034243 is about 342.0927526774.

Adding to 40034243 its reverse (34243004), we get a palindrome (74277247).

It can be divided in two parts, 400 and 34243, that added together give a palindrome (34643).

The spelling of 40034243 in words is "forty million, thirty-four thousand, two hundred forty-three".