1243431342 has 24 divisors (see below), whose sum is σ = 2751424416. Its totient is φ = 405658176.

The previous prime is 1243431337. The next prime is 1243431353. The reversal of 1243431342 is 2431343421.

It is a super-2 number, since 2×1243431342² = 3092243004535841928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 734043 + ... + 735734.

It is an arithmetic number, because the mean of its divisors is an integer number (114642684).

Almost surely, 2^1243431342 is an apocalyptic number.

1243431342 is an abundant number, since it is smaller than the sum of its proper divisors (1507993074).

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

1243431342 is a wasteful number, since it uses less digits than its factorization.

1243431342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469832 (or 1469829 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 1243431342 is about 35262.3218464128. The cubic root of 1243431342 is about 1075.3271308723.

Adding to 1243431342 its reverse (2431343421), we get a palindrome (3674774763).

The spelling of 1243431342 in words is "one billion, two hundred forty-three million, four hundred thirty-one thousand, three hundred forty-two".