424221212340 has 36 divisors (see below), whose sum is σ = 1286804344644. Its totient is φ = 113125656576.

The previous prime is 424221212339. The next prime is 424221212377. The reversal of 424221212340 is 43212122424.

It is a happy number.

424221212340 is a `hidden beast` number, since 4 + 2 + 422 + 1 + 2 + 1 + 234 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 146747221776 + 277473990564 = 383076^2 + 526758^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1178392077 + ... + 1178392436.

It is an arithmetic number, because the mean of its divisors is an integer number (35744565129).

Almost surely, 2^424221212340 is an apocalyptic number.

It is an amenable number.

424221212340 is an abundant number, since it is smaller than the sum of its proper divisors (862583132304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

424221212340 is a wasteful number, since it uses less digits than its factorization.

424221212340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356784528 (or 2356784523 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 424221212340 its reverse (43212122424), we get a palindrome (467433334764).

The spelling of 424221212340 in words is "four hundred twenty-four billion, two hundred twenty-one million, two hundred twelve thousand, three hundred forty".