1121423023 has 8 divisors (see below), whose sum is σ = 1293604992. Its totient is φ = 952235736.

The previous prime is 1121422999. The next prime is 1121423053. The reversal of 1121423023 is 3203241211.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121423023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121423053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747865 + ... + 749362.

It is an arithmetic number, because the mean of its divisors is an integer number (161700624).

Almost surely, 2^1121423023 is an apocalyptic number.

1121423023 is a deficient number, since it is larger than the sum of its proper divisors (172181969).

1121423023 is a wasteful number, since it uses less digits than its factorization.

1121423023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497341.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1121423023 is about 33487.6547850100. The cubic root of 1121423023 is about 1038.9384579503.

Adding to 1121423023 its reverse (3203241211), we get a palindrome (4324664234).

The spelling of 1121423023 in words is "one billion, one hundred twenty-one million, four hundred twenty-three thousand, twenty-three".