42120321330 has 16 divisors (see below), whose sum is σ = 101088771264. Its totient is φ = 11232085680.

The previous prime is 42120321311. The next prime is 42120321343. The reversal of 42120321330 is 3312302124.

It is a junction number, because it is equal to n+sod(n) for n = 42120321297 and 42120321306.

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, 702005326 + ... + 702005385.

It is an arithmetic number, because the mean of its divisors is an integer number (6318048204).

Almost surely, 2^42120321330 is an apocalyptic number.

42120321330 is an abundant number, since it is smaller than the sum of its proper divisors (58968449934).

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

42120321330 is a wasteful number, since it uses less digits than its factorization.

42120321330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404010721.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 42120321330 its reverse (3312302124), we get a palindrome (45432623454).

The spelling of 42120321330 in words is "forty-two billion, one hundred twenty million, three hundred twenty-one thousand, three hundred thirty".