2002020123 has 8 divisors (see below), whose sum is σ = 2671241728. Its totient is φ = 1333739304.

The previous prime is 2002020121. The next prime is 2002020149. The reversal of 2002020123 is 3210202002.

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

It is not a de Polignac number, because 2002020123 - 2¹ = 2002020121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002020099 and 2002020108.

It is not an unprimeable number, because it can be changed into a prime (2002020121) 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, 230215 + ... + 238752.

It is an arithmetic number, because the mean of its divisors is an integer number (333905216).

Almost surely, 2^2002020123 is an apocalyptic number.

2002020123 is a deficient number, since it is larger than the sum of its proper divisors (669221605).

2002020123 is a wasteful number, since it uses less digits than its factorization.

2002020123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470393.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2002020123 is about 44743.9395114020. The cubic root of 2002020123 is about 1260.3451064010.

Adding to 2002020123 its reverse (3210202002), we get a palindrome (5212222125).

The spelling of 2002020123 in words is "two billion, two million, twenty thousand, one hundred twenty-three".