1243430370 has 432 divisors, whose sum is σ = 4337037432. Its totient is φ = 244823040.

The previous prime is 1243430273. The next prime is 1243430381. The reversal of 1243430370 is 730343421.

1243430370 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 431351361 + 812079009 = 20769^2 + 28497^2 .

It is a super-2 number, since 2×1243430370² = 3092238170076673800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 30327550 + ... + 30327590.

Almost surely, 2^1243430370 is an apocalyptic number.

1243430370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243430370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2168518716).

1243430370 is an abundant number, since it is smaller than the sum of its proper divisors (3093607062).

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

1243430370 is a wasteful number, since it uses less digits than its factorization.

1243430370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 1243430370 is about 35262.3080639938. The cubic root of 1243430370 is about 1075.3268506750.

Adding to 1243430370 its reverse (730343421), we get a palindrome (1973773791).

The spelling of 1243430370 in words is "one billion, two hundred forty-three million, four hundred thirty thousand, three hundred seventy".