1022020423 has 4 divisors (see below), whose sum is σ = 1022853240. Its totient is φ = 1021187608.

The previous prime is 1022020379. The next prime is 1022020429. The reversal of 1022020423 is 3240202201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3240202201 = 13831 ⋅234271.

It is a cyclic number.

It is not a de Polignac number, because 1022020423 - 2²¹ = 1019923271 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022020397 and 1022020406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022020429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414565 + ... + 417022.

It is an arithmetic number, because the mean of its divisors is an integer number (255713310).

Almost surely, 2^1022020423 is an apocalyptic number.

1022020423 is a deficient number, since it is larger than the sum of its proper divisors (832817).

1022020423 is an equidigital number, since it uses as much as digits as its factorization.

1022020423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832816.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1022020423 is about 31969.0541461583. The cubic root of 1022020423 is about 1007.2869129239.

Adding to 1022020423 its reverse (3240202201), we get a palindrome (4262222624).

The spelling of 1022020423 in words is "one billion, twenty-two million, twenty thousand, four hundred twenty-three".