1243430445 has 8 divisors (see below), whose sum is σ = 1989488736. Its totient is φ = 663162896.

The previous prime is 1243430443. The next prime is 1243430453. The reversal of 1243430445 is 5440343421.

1243430445 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1243430445 - 2¹ = 1243430443 is a prime.

It is a super-2 number, since 2×1243430445² = 3092238543105796050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243430443) 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, 41447667 + ... + 41447696.

It is an arithmetic number, because the mean of its divisors is an integer number (248686092).

Almost surely, 2^1243430445 is an apocalyptic number.

1243430445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1243430445 is a deficient number, since it is larger than the sum of its proper divisors (746058291).

1243430445 is an equidigital number, since it uses as much as digits as its factorization.

1243430445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82895371.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 1243430445 is about 35262.3091274522. The cubic root of 1243430445 is about 1075.3268722952.

Adding to 1243430445 its reverse (5440343421), we get a palindrome (6683773866).

The spelling of 1243430445 in words is "one billion, two hundred forty-three million, four hundred thirty thousand, four hundred forty-five".