1243430430 has 32 divisors (see below), whose sum is σ = 3255527808. Its totient is φ = 301437600.

The previous prime is 1243430381. The next prime is 1243430443. The reversal of 1243430430 is 340343421.

1243430430 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 2×1243430430² = 3092238468499969800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1243430430.

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, 1883656 + ... + 1884315.

It is an arithmetic number, because the mean of its divisors is an integer number (101735244).

Almost surely, 2^1243430430 is an apocalyptic number.

1243430430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243430430 is an abundant number, since it is smaller than the sum of its proper divisors (2012097378).

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

1243430430 is a wasteful number, since it uses less digits than its factorization.

1243430430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3767992.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 1243430430 is about 35262.3089147605. The cubic root of 1243430430 is about 1075.3268679711.

Adding to 1243430430 its reverse (340343421), we get a palindrome (1583773851).

The spelling of 1243430430 in words is "one billion, two hundred forty-three million, four hundred thirty thousand, four hundred thirty".