1233420100 has 72 divisors (see below), whose sum is σ = 2931874848. Its totient is φ = 446668800.

The previous prime is 1233420077. The next prime is 1233420101. The reversal of 1233420100 is 10243321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1233420101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 280519 + ... + 284881.

It is an arithmetic number, because the mean of its divisors is an integer number (40720484).

Almost surely, 2^1233420100 is an apocalyptic number.

1233420100 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 1233420100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1465937424).

1233420100 is an abundant number, since it is smaller than the sum of its proper divisors (1698454748).

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

1233420100 is a wasteful number, since it uses less digits than its factorization.

1233420100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4645 (or 4638 counting only the distinct ones).

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

The square root of 1233420100 is about 35120.0811502479. The cubic root of 1233420100 is about 1072.4334228391.

Adding to 1233420100 its reverse (10243321), we get a palindrome (1243663421).

The spelling of 1233420100 in words is "one billion, two hundred thirty-three million, four hundred twenty thousand, one hundred".