40420304453 has 2 divisors, whose sum is σ = 40420304454. Its totient is φ = 40420304452.

The previous prime is 40420304447. The next prime is 40420304497. The reversal of 40420304453 is 35440302404.

40420304453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21363330244 + 19056974209 = 146162^2 + 138047^2 .

It is a cyclic number.

It is not a de Polignac number, because 40420304453 - 2⁶ = 40420304389 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40420304153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20210152226 + 20210152227.

It is an arithmetic number, because the mean of its divisors is an integer number (20210152227).

Almost surely, 2^40420304453 is an apocalyptic number.

It is an amenable number.

40420304453 is a deficient number, since it is larger than the sum of its proper divisors (1).

40420304453 is an equidigital number, since it uses as much as digits as its factorization.

40420304453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 29.

Adding to 40420304453 its reverse (35440302404), we get a palindrome (75860606857).

The spelling of 40420304453 in words is "forty billion, four hundred twenty million, three hundred four thousand, four hundred fifty-three".