1001233420 has 24 divisors (see below), whose sum is σ = 2293735248. Its totient is φ = 364084800.

The previous prime is 1001233361. The next prime is 1001233421. The reversal of 1001233420 is 243321001.

It is a happy number.

It is a super-2 number, since 2×1001233420² = 2004936722649792800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1001233394 and 1001233403.

It is not an unprimeable number, because it can be changed into a prime (1001233421) 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, 2275311 + ... + 2275750.

It is an arithmetic number, because the mean of its divisors is an integer number (95572302).

Almost surely, 2^1001233420 is an apocalyptic number.

1001233420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001233420 is an abundant number, since it is smaller than the sum of its proper divisors (1292501828).

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

1001233420 is a wasteful number, since it uses less digits than its factorization.

1001233420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4551081 (or 4551079 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1001233420 is about 31642.2726743829. The cubic root of 1001233420 is about 1000.4109710796.

Adding to 1001233420 its reverse (243321001), we get a palindrome (1244554421).

The spelling of 1001233420 in words is "one billion, one million, two hundred thirty-three thousand, four hundred twenty".