202421330 has 16 divisors (see below), whose sum is σ = 370535040. Its totient is φ = 79595952.

The previous prime is 202421309. The next prime is 202421353. The reversal of 202421330 is 33124202.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 202421299 and 202421308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170954 + ... + 172133.

It is an arithmetic number, because the mean of its divisors is an integer number (23158440).

Almost surely, 2^202421330 is an apocalyptic number.

202421330 is a deficient number, since it is larger than the sum of its proper divisors (168113710).

202421330 is a wasteful number, since it uses less digits than its factorization.

202421330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343153.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 202421330 is about 14227.4850201995. The cubic root of 202421330 is about 587.1540912299.

Adding to 202421330 its reverse (33124202), we get a palindrome (235545532).

The spelling of 202421330 in words is "two hundred two million, four hundred twenty-one thousand, three hundred thirty".