1236234420 has 192 divisors, whose sum is σ = 3992002560. Its totient is φ = 317395584.

The previous prime is 1236234413. The next prime is 1236234421. The reversal of 1236234420 is 244326321.

1236234420 is a `hidden beast` number, since 1 + 2 + 3 + 6 + 234 + 420 = 666.

1236234420 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1236234421) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1700097 + ... + 1700823.

It is an arithmetic number, because the mean of its divisors is an integer number (20791680).

Almost surely, 2^1236234420 is an apocalyptic number.

1236234420 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 1236234420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1996001280).

1236234420 is an abundant number, since it is smaller than the sum of its proper divisors (2755768140).

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

1236234420 is a wasteful number, since it uses less digits than its factorization.

1236234420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 1236234420 is about 35160.1254263974. The cubic root of 1236234420 is about 1073.2484677145.

The spelling of 1236234420 in words is "one billion, two hundred thirty-six million, two hundred thirty-four thousand, four hundred twenty".