2403421421 has 2 divisors, whose sum is σ = 2403421422. Its totient is φ = 2403421420.

The previous prime is 2403421417. The next prime is 2403421441. The reversal of 2403421421 is 1241243042.

2403421421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2261478025 + 141943396 = 47555^2 + 11914^2 .

It is a cyclic number.

It is not a de Polignac number, because 2403421421 - 2² = 2403421417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2403421441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1201710710 + 1201710711.

It is an arithmetic number, because the mean of its divisors is an integer number (1201710711).

Almost surely, 2^2403421421 is an apocalyptic number.

It is an amenable number.

2403421421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2403421421 is an equidigital number, since it uses as much as digits as its factorization.

2403421421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 2403421421 is about 49024.7021510585. The cubic root of 2403421421 is about 1339.5018236135.

Adding to 2403421421 its reverse (1241243042), we get a palindrome (3644664463).

The spelling of 2403421421 in words is "two billion, four hundred three million, four hundred twenty-one thousand, four hundred twenty-one".