1233255420 has 108 divisors (see below), whose sum is σ = 3948333480. Its totient is φ = 311542848.

The previous prime is 1233255407. The next prime is 1233255427. The reversal of 1233255420 is 245523321.

It is a happy number.

1233255420 is a `hidden beast` number, since 1 + 233 + 2 + 5 + 5 + 420 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233255427) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 55491 + ... + 74469.

Almost surely, 2^1233255420 is an apocalyptic number.

1233255420 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 1233255420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1974166740).

1233255420 is an abundant number, since it is smaller than the sum of its proper divisors (2715078060).

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

1233255420 is a wasteful number, since it uses less digits than its factorization.

1233255420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19032 (or 19008 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1233255420 is about 35117.7365443731. The cubic root of 1233255420 is about 1072.3856920898.

Adding to 1233255420 its reverse (245523321), we get a palindrome (1478778741).

The spelling of 1233255420 in words is "one billion, two hundred thirty-three million, two hundred fifty-five thousand, four hundred twenty".