1000120423 has 4 divisors (see below), whose sum is σ = 1052758360. Its totient is φ = 947482488.

The previous prime is 1000120409. The next prime is 1000120427. The reversal of 1000120423 is 3240210001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000120423 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 (1000120427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26318940 + ... + 26318977.

It is an arithmetic number, because the mean of its divisors is an integer number (263189590).

Almost surely, 2^1000120423 is an apocalyptic number.

1000120423 is a deficient number, since it is larger than the sum of its proper divisors (52637937).

1000120423 is an equidigital number, since it uses as much as digits as its factorization.

1000120423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52637936.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1000120423 is about 31624.6805991776. The cubic root of 1000120423 is about 1000.0401393888.

Adding to 1000120423 its reverse (3240210001), we get a palindrome (4240330424).

The spelling of 1000120423 in words is "one billion, one hundred twenty thousand, four hundred twenty-three".