40770043 has 2 divisors, whose sum is σ = 40770044. Its totient is φ = 40770042.

The previous prime is 40770011. The next prime is 40770077. The reversal of 40770043 is 34007704.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40770043 - 2⁵ = 40770011 is a prime.

It is not a weakly prime, because it can be changed into another prime (40770343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20385021 + 20385022.

It is an arithmetic number, because the mean of its divisors is an integer number (20385022).

Almost surely, 2^40770043 is an apocalyptic number.

40770043 is a deficient number, since it is larger than the sum of its proper divisors (1).

40770043 is an equidigital number, since it uses as much as digits as its factorization.

40770043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 40770043 is about 6385.1423633307. The cubic root of 40770043 is about 344.1758469750.

Adding to 40770043 its reverse (34007704), we get a palindrome (74777747).

The spelling of 40770043 in words is "forty million, seven hundred seventy thousand, forty-three".