1121407923 has 8 divisors (see below), whose sum is σ = 1514137600. Its totient is φ = 738141768.

The previous prime is 1121407909. The next prime is 1121407939. The reversal of 1121407923 is 3297041211.

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

It is not a de Polignac number, because 1121407923 - 2⁵ = 1121407891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121407943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2365603 + ... + 2366076.

It is an arithmetic number, because the mean of its divisors is an integer number (189267200).

Almost surely, 2^1121407923 is an apocalyptic number.

1121407923 is a deficient number, since it is larger than the sum of its proper divisors (392729677).

1121407923 is an equidigital number, since it uses as much as digits as its factorization.

1121407923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4731761.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1121407923 is about 33487.4293280329. The cubic root of 1121407923 is about 1038.9337948152.

The spelling of 1121407923 in words is "one billion, one hundred twenty-one million, four hundred seven thousand, nine hundred twenty-three".