1235421136 has 20 divisors (see below), whose sum is σ = 2422469952. Its totient is φ = 610267616.

The previous prime is 1235421067. The next prime is 1235421163. The reversal of 1235421136 is 6311245321.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 463816 + ... + 466471.

Almost surely, 2^1235421136 is an apocalyptic number.

1235421136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1235421136 is a deficient number, since it is larger than the sum of its proper divisors (1187048816).

1235421136 is an equidigital number, since it uses as much as digits as its factorization.

1235421136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930378 (or 930372 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 1235421136 is about 35148.5580927582. The cubic root of 1235421136 is about 1073.0130627158.

Adding to 1235421136 its reverse (6311245321), we get a palindrome (7546666457).

The spelling of 1235421136 in words is "one billion, two hundred thirty-five million, four hundred twenty-one thousand, one hundred thirty-six".