1232140520 has 64 divisors (see below), whose sum is σ = 2989481040. Its totient is φ = 454348800.

The previous prime is 1232140493. The next prime is 1232140523. The reversal of 1232140520 is 250412321.

It can be written as a sum of positive squares in 8 ways, for example, as 1674436 + 1230466084 = 1294^2 + 35078^2 .

It is a super-2 number, since 2×1232140520² = 3036340522051740800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1232140492 and 1232140501.

It is not an unprimeable number, because it can be changed into a prime (1232140523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706850 + ... + 708590.

Almost surely, 2^1232140520 is an apocalyptic number.

1232140520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232140520 is an abundant number, since it is smaller than the sum of its proper divisors (1757340520).

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

1232140520 is a wasteful number, since it uses less digits than its factorization.

1232140520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126 (or 3122 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1232140520 is about 35101.8592100191. The cubic root of 1232140520 is about 1072.0624383510.

Adding to 1232140520 its reverse (250412321), we get a palindrome (1482552841).

The spelling of 1232140520 in words is "one billion, two hundred thirty-two million, one hundred forty thousand, five hundred twenty".