1120421000123 has 4 divisors (see below), whose sum is σ = 1123377256440. Its totient is φ = 1117464743808.

The previous prime is 1120421000077. The next prime is 1120421000131. The reversal of 1120421000123 is 3210001240211.

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 1120421000123 - 2⁶ = 1120421000059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1120421000173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1478127590 + ... + 1478128347.

It is an arithmetic number, because the mean of its divisors is an integer number (280844314110).

Almost surely, 2^{1120421000123} is an apocalyptic number.

1120421000123 is a deficient number, since it is larger than the sum of its proper divisors (2956256317).

1120421000123 is an equidigital number, since it uses as much as digits as its factorization.

1120421000123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956256316.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1120421000123 its reverse (3210001240211), we get a palindrome (4330422240334).

The spelling of 1120421000123 in words is "one trillion, one hundred twenty billion, four hundred twenty-one million, one hundred twenty-three", and thus it is an aban number.