202304421 has 12 divisors (see below), whose sum is σ = 318782880. Its totient is φ = 122608680.

The previous prime is 202304411. The next prime is 202304447. The reversal of 202304421 is 124403202.

It is not a de Polignac number, because 202304421 - 2¹³ = 202296229 is a prime.

It is a super-2 number, since 2×202304421² = 81854157512290482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202304394 and 202304403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202304411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1021641 + ... + 1021838.

It is an arithmetic number, because the mean of its divisors is an integer number (26565240).

Almost surely, 2^202304421 is an apocalyptic number.

It is an amenable number.

202304421 is a deficient number, since it is larger than the sum of its proper divisors (116478459).

202304421 is a wasteful number, since it uses less digits than its factorization.

202304421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043496 (or 2043493 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 202304421 is about 14223.3758651032. The cubic root of 202304421 is about 587.0410319704.

Adding to 202304421 its reverse (124403202), we get a palindrome (326707623).

The spelling of 202304421 in words is "two hundred two million, three hundred four thousand, four hundred twenty-one".