1232122540 has 24 divisors (see below), whose sum is σ = 2822681232. Its totient is φ = 448044480.

The previous prime is 1232122523. The next prime is 1232122553. The reversal of 1232122540 is 452212321.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2800059 + ... + 2800498.

It is an arithmetic number, because the mean of its divisors is an integer number (117611718).

Almost surely, 2^1232122540 is an apocalyptic number.

1232122540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232122540 is an abundant number, since it is smaller than the sum of its proper divisors (1590558692).

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

1232122540 is a wasteful number, since it uses less digits than its factorization.

1232122540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5600577 (or 5600575 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1232122540 is about 35101.6030972946. The cubic root of 1232122540 is about 1072.0572236384.

Adding to 1232122540 its reverse (452212321), we get a palindrome (1684334861).

The spelling of 1232122540 in words is "one billion, two hundred thirty-two million, one hundred twenty-two thousand, five hundred forty".