1420427377 has 2 divisors, whose sum is σ = 1420427378. Its totient is φ = 1420427376.

The previous prime is 1420427363. The next prime is 1420427387. The reversal of 1420427377 is 7737240241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1220035041 + 200392336 = 34929^2 + 14156^2 .

It is an emirp because it is prime and its reverse (7737240241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420427377 is a prime.

It is a super-2 number, since 2×1420427377² = 4035227866662200258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1420427387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710213688 + 710213689.

It is an arithmetic number, because the mean of its divisors is an integer number (710213689).

Almost surely, 2^1420427377 is an apocalyptic number.

It is an amenable number.

1420427377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420427377 is an equidigital number, since it uses as much as digits as its factorization.

1420427377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65856, while the sum is 37.

The square root of 1420427377 is about 37688.5576402175. The cubic root of 1420427377 is about 1124.1036157081.

The spelling of 1420427377 in words is "one billion, four hundred twenty million, four hundred twenty-seven thousand, three hundred seventy-seven".