420401757427 has 2 divisors, whose sum is σ = 420401757428. Its totient is φ = 420401757426.

The previous prime is 420401757401. The next prime is 420401757437. The reversal of 420401757427 is 724757104024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420401757427 is a prime.

It is not a weakly prime, because it can be changed into another prime (420401757437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210200878713 + 210200878714.

It is an arithmetic number, because the mean of its divisors is an integer number (210200878714).

Almost surely, 2^420401757427 is an apocalyptic number.

420401757427 is a deficient number, since it is larger than the sum of its proper divisors (1).

420401757427 is an equidigital number, since it uses as much as digits as its factorization.

420401757427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 439040, while the sum is 43.

The spelling of 420401757427 in words is "four hundred twenty billion, four hundred one million, seven hundred fifty-seven thousand, four hundred twenty-seven".