1121001423 has 4 divisors (see below), whose sum is σ = 1494668568. Its totient is φ = 747334280.

The previous prime is 1121001419. The next prime is 1121001451. The reversal of 1121001423 is 3241001211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121001423 - 2² = 1121001419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121001473) 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 3 ways as a sum of consecutive naturals, for example, 186833568 + ... + 186833573.

It is an arithmetic number, because the mean of its divisors is an integer number (373667142).

Almost surely, 2^1121001423 is an apocalyptic number.

1121001423 is a deficient number, since it is larger than the sum of its proper divisors (373667145).

1121001423 is an equidigital number, since it uses as much as digits as its factorization.

1121001423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373667144.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1121001423 is about 33481.3593362038. The cubic root of 1121001423 is about 1038.8082450133.

Adding to 1121001423 its reverse (3241001211), we get a palindrome (4362002634).

The spelling of 1121001423 in words is "one billion, one hundred twenty-one million, one thousand, four hundred twenty-three".