1420420733 has 2 divisors, whose sum is σ = 1420420734. Its totient is φ = 1420420732.

The previous prime is 1420420709. The next prime is 1420420777. The reversal of 1420420733 is 3370240241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1392931684 + 27489049 = 37322^2 + 5243^2 .

It is an emirp because it is prime and its reverse (3370240241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1420420733 - 2¹² = 1420416637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420420433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710210366 + 710210367.

It is an arithmetic number, because the mean of its divisors is an integer number (710210367).

Almost surely, 2^1420420733 is an apocalyptic number.

It is an amenable number.

1420420733 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420420733 is an equidigital number, since it uses as much as digits as its factorization.

1420420733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 1420420733 is about 37688.4694966511. The cubic root of 1420420733 is about 1124.1018630534.

Adding to 1420420733 its reverse (3370240241), we get a palindrome (4790660974).

The spelling of 1420420733 in words is "one billion, four hundred twenty million, four hundred twenty thousand, seven hundred thirty-three".