1232140 has 48 divisors (see below), whose sum is σ = 3189312. Its totient is φ = 389376.

The previous prime is 1232089. The next prime is 1232171. The reversal of 1232140 is 412321.

1232140 = 52² + 53² + ... + 156².

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 1232140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1482 + ... + 2158.

It is an arithmetic number, because the mean of its divisors is an integer number (66444).

2^1232140 is an apocalyptic number.

1232140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1232140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1594656).

1232140 is an abundant number, since it is smaller than the sum of its proper divisors (1957172).

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

1232140 is a wasteful number, since it uses less digits than its factorization.

1232140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706 (or 704 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1232140 is about 1110.0180178718. The cubic root of 1232140 is about 107.2062287537.

Adding to 1232140 its reverse (412321), we get a palindrome (1644461).

The spelling of 1232140 in words is "one million, two hundred thirty-two thousand, one hundred forty".