7210403421 has 12 divisors (see below), whose sum is σ = 10410287328. Its totient is φ = 4437171024.

The previous prime is 7210403419. The next prime is 7210403437. The reversal of 7210403421 is 1243040127.

It is a happy number.

It is not a de Polignac number, because 7210403421 - 2¹ = 7210403419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7210403391 and 7210403400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7210403411) 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 11 ways as a sum of consecutive naturals, for example, 7110345 + ... + 7111358.

It is an arithmetic number, because the mean of its divisors is an integer number (867523944).

Almost surely, 2^7210403421 is an apocalyptic number.

It is an amenable number.

7210403421 is a deficient number, since it is larger than the sum of its proper divisors (3199883907).

7210403421 is a wasteful number, since it uses less digits than its factorization.

7210403421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14221732 (or 14221719 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 7210403421 is about 84914.0943601237. The cubic root of 7210403421 is about 1931.9083579741.

Adding to 7210403421 its reverse (1243040127), we get a palindrome (8453443548).

The spelling of 7210403421 in words is "seven billion, two hundred ten million, four hundred three thousand, four hundred twenty-one".