20123120003 has 8 divisors (see below), whose sum is σ = 23997758208. Its totient is φ = 16498458504.

The previous prime is 20123119979. The next prime is 20123120009. The reversal of 20123120003 is 30002132102.

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 not a de Polignac number, because 20123120003 - 2¹⁶ = 20123054467 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 20123120003.

It is not an unprimeable number, because it can be changed into a prime (20123120009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62494001 + ... + 62494322.

It is an arithmetic number, because the mean of its divisors is an integer number (2999719776).

Almost surely, 2^20123120003 is an apocalyptic number.

20123120003 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20123120003 is a deficient number, since it is larger than the sum of its proper divisors (3874638205).

20123120003 is a wasteful number, since it uses less digits than its factorization.

20123120003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124988353.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20123120003 its reverse (30002132102), we get a palindrome (50125252105).

The spelling of 20123120003 in words is "twenty billion, one hundred twenty-three million, one hundred twenty thousand, three".