1020420413 has 2 divisors, whose sum is σ = 1020420414. Its totient is φ = 1020420412.

The previous prime is 1020420409. The next prime is 1020420421. The reversal of 1020420413 is 3140240201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 981756889 + 38663524 = 31333^2 + 6218^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020420413 - 2² = 1020420409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020420391 and 1020420400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020420433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510210206 + 510210207.

It is an arithmetic number, because the mean of its divisors is an integer number (510210207).

Almost surely, 2^1020420413 is an apocalyptic number.

It is an amenable number.

1020420413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020420413 is an equidigital number, since it uses as much as digits as its factorization.

1020420413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1020420413 is about 31944.0199880979. The cubic root of 1020420413 is about 1006.7609903260.

Adding to 1020420413 its reverse (3140240201), we get a palindrome (4160660614).

The spelling of 1020420413 in words is "one billion, twenty million, four hundred twenty thousand, four hundred thirteen".