1235112340 has 72 divisors (see below), whose sum is σ = 3258291456. Its totient is φ = 384964800.

The previous prime is 1235112317. The next prime is 1235112341. The reversal of 1235112340 is 432115321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235112341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19516 + ... + 53395.

It is an arithmetic number, because the mean of its divisors is an integer number (45254048).

Almost surely, 2^1235112340 is an apocalyptic number.

1235112340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1235112340 is an abundant number, since it is smaller than the sum of its proper divisors (2023179116).

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

1235112340 is a wasteful number, since it uses less digits than its factorization.

1235112340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72949 (or 72936 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1235112340 is about 35144.1650918044. The cubic root of 1235112340 is about 1072.9236546745.

Adding to 1235112340 its reverse (432115321), we get a palindrome (1667227661).

The spelling of 1235112340 in words is "one billion, two hundred thirty-five million, one hundred twelve thousand, three hundred forty".