1420847303857 has 2 divisors, whose sum is σ = 1420847303858. Its totient is φ = 1420847303856.

The previous prime is 1420847303809. The next prime is 1420847303861. The reversal of 1420847303857 is 7583037480241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 771277394176 + 649569909681 = 878224^2 + 805959^2 .

It is an emirp because it is prime and its reverse (7583037480241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1420847303857 - 2³⁹ = 871091489969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1420847301857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710423651928 + 710423651929.

It is an arithmetic number, because the mean of its divisors is an integer number (710423651929).

Almost surely, 2^{1420847303857} is an apocalyptic number.

It is an amenable number.

1420847303857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420847303857 is an equidigital number, since it uses as much as digits as its factorization.

1420847303857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4515840, while the sum is 52.

The spelling of 1420847303857 in words is "one trillion, four hundred twenty billion, eight hundred forty-seven million, three hundred three thousand, eight hundred fifty-seven".