1235452240 has 40 divisors (see below), whose sum is σ = 3133558368. Its totient is φ = 449255040.

The previous prime is 1235452217. The next prime is 1235452241. The reversal of 1235452240 is 422545321.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1235452199 and 1235452208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235452241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701082 + ... + 702841.

Almost surely, 2^1235452240 is an apocalyptic number.

1235452240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1235452240 is an abundant number, since it is smaller than the sum of its proper divisors (1898106128).

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

1235452240 is a wasteful number, since it uses less digits than its factorization.

1235452240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403947 (or 1403941 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 1235452240 is about 35149.0005547811. Note that the first 3 decimals coincide. The cubic root of 1235452240 is about 1073.0220676663.

Adding to 1235452240 its reverse (422545321), we get a palindrome (1657997561).

The spelling of 1235452240 in words is "one billion, two hundred thirty-five million, four hundred fifty-two thousand, two hundred forty".