1013223420 has 144 divisors (see below), whose sum is σ = 3408219360. Its totient is φ = 241574400.

The previous prime is 1013223397. The next prime is 1013223451. The reversal of 1013223420 is 243223101.

1013223420 is a `hidden beast` number, since 1 + 0 + 1 + 322 + 342 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1013223393 and 1013223402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116586 + ... + 124974.

It is an arithmetic number, because the mean of its divisors is an integer number (23668190).

Almost surely, 2^1013223420 is an apocalyptic number.

1013223420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1013223420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1704109680).

1013223420 is an abundant number, since it is smaller than the sum of its proper divisors (2394995940).

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

1013223420 is a wasteful number, since it uses less digits than its factorization.

1013223420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8476 (or 8471 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1013223420 is about 31831.1705722551. The cubic root of 1013223420 is about 1004.3885193912.

Adding to 1013223420 its reverse (243223101), we get a palindrome (1256446521).

The spelling of 1013223420 in words is "one billion, thirteen million, two hundred twenty-three thousand, four hundred twenty".