1121142423 has 8 divisors (see below), whose sum is σ = 1517168128. Its totient is φ = 736272504.

The previous prime is 1121142413. The next prime is 1121142427. The reversal of 1121142423 is 3242411211.

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

It is not a de Polignac number, because 1121142423 - 2⁶ = 1121142359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121142423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121142427) 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, 2788711 + ... + 2789112.

It is an arithmetic number, because the mean of its divisors is an integer number (189646016).

Almost surely, 2^1121142423 is an apocalyptic number.

1121142423 is a deficient number, since it is larger than the sum of its proper divisors (396025705).

1121142423 is an equidigital number, since it uses as much as digits as its factorization.

1121142423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5577893.

The product of its digits is 384, while the sum is 21.

The square root of 1121142423 is about 33483.4649192702. The cubic root of 1121142423 is about 1038.8517970906.

Adding to 1121142423 its reverse (3242411211), we get a palindrome (4363553634).

The spelling of 1121142423 in words is "one billion, one hundred twenty-one million, one hundred forty-two thousand, four hundred twenty-three".