2003120421 has 8 divisors (see below), whose sum is σ = 2827934784. Its totient is φ = 1256859840.

The previous prime is 2003120381. The next prime is 2003120437. The reversal of 2003120421 is 1240213002.

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

It is not a de Polignac number, because 2003120421 - 2⁷ = 2003120293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2003120421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003120461) 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, 19638385 + ... + 19638486.

It is an arithmetic number, because the mean of its divisors is an integer number (353491848).

Almost surely, 2^2003120421 is an apocalyptic number.

It is an amenable number.

2003120421 is a deficient number, since it is larger than the sum of its proper divisors (824814363).

2003120421 is a wasteful number, since it uses less digits than its factorization.

2003120421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39276891.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2003120421 is about 44756.2333200639. The cubic root of 2003120421 is about 1260.5759567658.

Adding to 2003120421 its reverse (1240213002), we get a palindrome (3243333423).

The spelling of 2003120421 in words is "two billion, three million, one hundred twenty thousand, four hundred twenty-one".