1243455432 has 32 divisors (see below), whose sum is σ = 3137164800. Its totient is φ = 410681664.

The previous prime is 1243455431. The next prime is 1243455461. The reversal of 1243455432 is 2345543421.

1243455432 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1243455432² = 3092362822740613248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1243455393 and 1243455402.

It is not an unprimeable number, because it can be changed into a prime (1243455431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235048 + ... + 240279.

It is an arithmetic number, because the mean of its divisors is an integer number (98036400).

Almost surely, 2^1243455432 is an apocalyptic number.

1243455432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1243455432 is an abundant number, since it is smaller than the sum of its proper divisors (1893709368).

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

1243455432 is a wasteful number, since it uses less digits than its factorization.

1243455432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475445 (or 475441 counting only the distinct ones).

The product of its digits is 57600, while the sum is 33.

The square root of 1243455432 is about 35262.6634274837. The cubic root of 1243455432 is about 1075.3340752212.

Adding to 1243455432 its reverse (2345543421), we get a palindrome (3588998853).

The spelling of 1243455432 in words is "one billion, two hundred forty-three million, four hundred fifty-five thousand, four hundred thirty-two".