1022023420 has 24 divisors (see below), whose sum is σ = 2341363248. Its totient is φ = 371644800.

The previous prime is 1022023411. The next prime is 1022023421. The reversal of 1022023420 is 243202201.

It is a junction number, because it is equal to n+sod(n) for n = 1022023394 and 1022023403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022023421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2322561 + ... + 2323000.

It is an arithmetic number, because the mean of its divisors is an integer number (97556802).

Almost surely, 2^1022023420 is an apocalyptic number.

1022023420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022023420 is an abundant number, since it is smaller than the sum of its proper divisors (1319339828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1022023420 is a wasteful number, since it uses less digits than its factorization.

1022023420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4645581 (or 4645579 counting only the distinct ones).

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

The square root of 1022023420 is about 31969.1010195783. The cubic root of 1022023420 is about 1007.2878975213.

Adding to 1022023420 its reverse (243202201), we get a palindrome (1265225621).

The spelling of 1022023420 in words is "one billion, twenty-two million, twenty-three thousand, four hundred twenty".