1235253420 has 72 divisors (see below), whose sum is σ = 3750308016. Its totient is φ = 329104512.

The previous prime is 1235253377. The next prime is 1235253427. The reversal of 1235253420 is 243525321.

It is a happy number.

1235253420 is a `hidden beast` number, since 1 + 235 + 2 + 5 + 3 + 420 = 666.

It is not an unprimeable number, because it can be changed into a prime (1235253427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 259179 + ... + 263901.

Almost surely, 2^1235253420 is an apocalyptic number.

1235253420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1235253420 is an abundant number, since it is smaller than the sum of its proper divisors (2515054596).

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

1235253420 is a wasteful number, since it uses less digits than its factorization.

1235253420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6191 (or 6186 counting only the distinct ones).

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

The square root of 1235253420 is about 35146.1721955606. The cubic root of 1235253420 is about 1072.9645044826.

Adding to 1235253420 its reverse (243525321), we get a palindrome (1478778741).

The spelling of 1235253420 in words is "one billion, two hundred thirty-five million, two hundred fifty-three thousand, four hundred twenty".