421240243330 has 16 divisors (see below), whose sum is σ = 758239952184. Its totient is φ = 168494427520.

The previous prime is 421240243271. The next prime is 421240243349. The reversal of 421240243330 is 33342042124.

It can be written as a sum of positive squares in 4 ways, for example, as 104531295969 + 316708947361 = 323313^2 + 562769^2 .

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, 1584054 + ... + 1830766.

Almost surely, 2^421240243330 is an apocalyptic number.

421240243330 is a deficient number, since it is larger than the sum of its proper divisors (336999708854).

421240243330 is a wasteful number, since it uses less digits than its factorization.

421240243330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417461.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 421240243330 its reverse (33342042124), we get a palindrome (454582285454).

The spelling of 421240243330 in words is "four hundred twenty-one billion, two hundred forty million, two hundred forty-three thousand, three hundred thirty".