40428243403 has 2 divisors, whose sum is σ = 40428243404. Its totient is φ = 40428243402.

The previous prime is 40428243347. The next prime is 40428243413. The reversal of 40428243403 is 30434282404.

40428243403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40428243403 is a prime.

It is not a weakly prime, because it can be changed into another prime (40428243413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20214121701 + 20214121702.

It is an arithmetic number, because the mean of its divisors is an integer number (20214121702).

Almost surely, 2^40428243403 is an apocalyptic number.

40428243403 is a deficient number, since it is larger than the sum of its proper divisors (1).

40428243403 is an equidigital number, since it uses as much as digits as its factorization.

40428243403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 34.

The spelling of 40428243403 in words is "forty billion, four hundred twenty-eight million, two hundred forty-three thousand, four hundred three".