1420244477 has 2 divisors, whose sum is σ = 1420244478. Its totient is φ = 1420244476.

The previous prime is 1420244473. The next prime is 1420244479. The reversal of 1420244477 is 7744420241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1391364601 + 28879876 = 37301^2 + 5374^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420244477 - 2² = 1420244473 is a prime.

Together with 1420244479, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420244473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710122238 + 710122239.

It is an arithmetic number, because the mean of its divisors is an integer number (710122239).

Almost surely, 2^1420244477 is an apocalyptic number.

It is an amenable number.

1420244477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420244477 is an equidigital number, since it uses as much as digits as its factorization.

1420244477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50176, while the sum is 35.

The square root of 1420244477 is about 37686.1310962004. The cubic root of 1420244477 is about 1124.0553655875.

The spelling of 1420244477 in words is "one billion, four hundred twenty million, two hundred forty-four thousand, four hundred seventy-seven".