30421342123 has 2 divisors, whose sum is σ = 30421342124. Its totient is φ = 30421342122.

The previous prime is 30421342109. The next prime is 30421342141. The reversal of 30421342123 is 32124312403.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30421342123 - 2¹³ = 30421333931 is a prime.

It is a super-2 number, since 2×30421342123² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30421342183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15210671061 + 15210671062.

It is an arithmetic number, because the mean of its divisors is an integer number (15210671062).

Almost surely, 2^30421342123 is an apocalyptic number.

30421342123 is a deficient number, since it is larger than the sum of its proper divisors (1).

30421342123 is an equidigital number, since it uses as much as digits as its factorization.

30421342123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 30421342123 its reverse (32124312403), we get a palindrome (62545654526).

The spelling of 30421342123 in words is "thirty billion, four hundred twenty-one million, three hundred forty-two thousand, one hundred twenty-three".