40030043 has 2 divisors, whose sum is σ = 40030044. Its totient is φ = 40030042.

The previous prime is 40030027. The next prime is 40030069. The reversal of 40030043 is 34003004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40030043 - 2⁴ = 40030027 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (40530043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20015021 + 20015022.

It is an arithmetic number, because the mean of its divisors is an integer number (20015022).

Almost surely, 2^40030043 is an apocalyptic number.

40030043 is a deficient number, since it is larger than the sum of its proper divisors (1).

40030043 is an equidigital number, since it uses as much as digits as its factorization.

40030043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 40030043 is about 6326.9299822268. The cubic root of 40030043 is about 342.0807892539.

Adding to 40030043 its reverse (34003004), we get a palindrome (74033047).

The spelling of 40030043 in words is "forty million, thirty thousand, forty-three".