1202020423 has 2 divisors, whose sum is σ = 1202020424. Its totient is φ = 1202020422.

The previous prime is 1202020397. The next prime is 1202020429. The reversal of 1202020423 is 3240202021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1202020423 - 2⁹ = 1202019911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202020397 and 1202020406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202020429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601010211 + 601010212.

It is an arithmetic number, because the mean of its divisors is an integer number (601010212).

Almost surely, 2^1202020423 is an apocalyptic number.

1202020423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202020423 is an equidigital number, since it uses as much as digits as its factorization.

1202020423 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 16.

The square root of 1202020423 is about 34670.1661807382. The cubic root of 1202020423 is about 1063.2546291746.

Adding to 1202020423 its reverse (3240202021), we get a palindrome (4442222444).

The spelling of 1202020423 in words is "one billion, two hundred two million, twenty thousand, four hundred twenty-three".