1243331042 has 8 divisors (see below), whose sum is σ = 1876875996. Its totient is φ = 617705712.

The previous prime is 1243331029. The next prime is 1243331053. The reversal of 1243331042 is 2401333421.

It can be written as a sum of positive squares in 2 ways, for example, as 1195707241 + 47623801 = 34579^2 + 6901^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1243330999 and 1243331017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1979513 + ... + 1980140.

Almost surely, 2^1243331042 is an apocalyptic number.

1243331042 is a deficient number, since it is larger than the sum of its proper divisors (633544954).

1243331042 is a wasteful number, since it uses less digits than its factorization.

1243331042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3959812.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1243331042 is about 35260.8996198339. The cubic root of 1243331042 is about 1075.2982167410.

Adding to 1243331042 its reverse (2401333421), we get a palindrome (3644664463).

The spelling of 1243331042 in words is "one billion, two hundred forty-three million, three hundred thirty-one thousand, forty-two".