1235140634 has 32 divisors (see below), whose sum is σ = 2283931776. Its totient is φ = 487840320.

The previous prime is 1235140609. The next prime is 1235140639. The reversal of 1235140634 is 4360415321.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1235140597 and 1235140606.

It is not an unprimeable number, because it can be changed into a prime (1235140639) 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 15 ways as a sum of consecutive naturals, for example, 115169 + ... + 125435.

It is an arithmetic number, because the mean of its divisors is an integer number (71372868).

Almost surely, 2^1235140634 is an apocalyptic number.

1235140634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1235140634 is a deficient number, since it is larger than the sum of its proper divisors (1048791142).

1235140634 is a wasteful number, since it uses less digits than its factorization.

1235140634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10950.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1235140634 is about 35144.5676314278. The cubic root of 1235140634 is about 1072.9318474704.

Adding to 1235140634 its reverse (4360415321), we get a palindrome (5595555955).

The spelling of 1235140634 in words is "one billion, two hundred thirty-five million, one hundred forty thousand, six hundred thirty-four".