30321421442 has 16 divisors (see below), whose sum is σ = 51861979512. Its totient is φ = 13171296000.

The previous prime is 30321421421. The next prime is 30321421447. The reversal of 30321421442 is 24412412303.

It can be written as a sum of positive squares in 4 ways, for example, as 19720865761 + 10600555681 = 140431^2 + 102959^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (30321421447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34299809 + ... + 34300692.

Almost surely, 2^30321421442 is an apocalyptic number.

30321421442 is a deficient number, since it is larger than the sum of its proper divisors (21540558070).

30321421442 is a wasteful number, since it uses less digits than its factorization.

30321421442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68600533.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 30321421442 its reverse (24412412303), we get a palindrome (54733833745).

The spelling of 30321421442 in words is "thirty billion, three hundred twenty-one million, four hundred twenty-one thousand, four hundred forty-two".