2403120421 has 4 divisors (see below), whose sum is σ = 2587975852. Its totient is φ = 2218264992.

The previous prime is 2403120407. The next prime is 2403120427. The reversal of 2403120421 is 1240213042.

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

It can be written as a sum of positive squares in 2 ways, for example, as 386122500 + 2016997921 = 19650^2 + 44911^2 .

It is a cyclic number.

It is not a de Polignac number, because 2403120421 - 2⁹ = 2403119909 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 (2403120427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92427696 + ... + 92427721.

It is an arithmetic number, because the mean of its divisors is an integer number (646993963).

Almost surely, 2^2403120421 is an apocalyptic number.

It is an amenable number.

2403120421 is a deficient number, since it is larger than the sum of its proper divisors (184855431).

2403120421 is a wasteful number, since it uses less digits than its factorization.

2403120421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184855430.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2403120421 is about 49021.6321739699. The cubic root of 2403120421 is about 1339.4459023786.

Adding to 2403120421 its reverse (1240213042), we get a palindrome (3643333463).

The spelling of 2403120421 in words is "two billion, four hundred three million, one hundred twenty thousand, four hundred twenty-one".