1121347138 has 8 divisors (see below), whose sum is σ = 1696906188. Its totient is φ = 555711744.

The previous prime is 1121347069. The next prime is 1121347141. The reversal of 1121347138 is 8317431211.

It can be written as a sum of positive squares in 2 ways, for example, as 664969369 + 456377769 = 25787^2 + 21363^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2480631 + ... + 2481082.

Almost surely, 2^1121347138 is an apocalyptic number.

1121347138 is a deficient number, since it is larger than the sum of its proper divisors (575559050).

1121347138 is a wasteful number, since it uses less digits than its factorization.

1121347138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4961828.

The product of its digits is 4032, while the sum is 31.

The square root of 1121347138 is about 33486.5217363643. The cubic root of 1121347138 is about 1038.9150229569.

Adding to 1121347138 its reverse (8317431211), we get a palindrome (9438778349).

The spelling of 1121347138 in words is "one billion, one hundred twenty-one million, three hundred forty-seven thousand, one hundred thirty-eight".