1243430032 has 80 divisors (see below), whose sum is σ = 2664673200. Its totient is φ = 558544896.

The previous prime is 1243430003. The next prime is 1243430033. The reversal of 1243430032 is 2300343421.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 69956496 + 1173473536 = 8364^2 + 34256^2 .

It is a super-2 number, since 2×1243430032² = 3092236488959042048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1243429985 and 1243430012.

It is not an unprimeable number, because it can be changed into a prime (1243430033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1642198 + ... + 1642954.

It is an arithmetic number, because the mean of its divisors is an integer number (33308415).

Almost surely, 2^1243430032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243430032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1332336600).

1243430032 is an abundant number, since it is smaller than the sum of its proper divisors (1421243168).

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

1243430032 is a wasteful number, since it uses less digits than its factorization.

1243430032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 1243430032 is about 35262.3032713406. The cubic root of 1243430032 is about 1075.3267532401.

Adding to 1243430032 its reverse (2300343421), we get a palindrome (3543773453).

The spelling of 1243430032 in words is "one billion, two hundred forty-three million, four hundred thirty thousand, thirty-two".