1235422643 has 12 divisors (see below), whose sum is σ = 1547673120. Its totient is φ = 977476752.

The previous prime is 1235422613. The next prime is 1235422651. The reversal of 1235422643 is 3462245321.

It is not a de Polignac number, because 1235422643 - 2¹⁸ = 1235160499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1235422603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 969083 + ... + 970356.

It is an arithmetic number, because the mean of its divisors is an integer number (128972760).

Almost surely, 2^1235422643 is an apocalyptic number.

1235422643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1235422643 is a deficient number, since it is larger than the sum of its proper divisors (312250477).

1235422643 is a wasteful number, since it uses less digits than its factorization.

1235422643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939466 (or 1939459 counting only the distinct ones).

The product of its digits is 34560, while the sum is 32.

The square root of 1235422643 is about 35148.5795303310. The cubic root of 1235422643 is about 1073.0134990124.

Adding to 1235422643 its reverse (3462245321), we get a palindrome (4697667964).

The spelling of 1235422643 in words is "one billion, two hundred thirty-five million, four hundred twenty-two thousand, six hundred forty-three".