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30420023342 = 2137619179357
BaseRepresentation
bin11100010101001011…
…001011100000101110
32220112000122022002012
4130111023023200232
5444300011221332
621550314401222
72124556634462
oct342513134056
986460568065
1030420023342
11119a0345865
125a8b730212
132b3a3c7617
1416881424a2
15bd09453b2
hex7152cb82e

30420023342 has 16 divisors (see below), whose sum is σ = 46037611440. Its totient is φ = 15074513088.

The previous prime is 30420023323. The next prime is 30420023369. The reversal of 30420023342 is 24332002403.

30420023342 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79928 + ... + 259284.

It is an arithmetic number, because the mean of its divisors is an integer number (2877350715).

Almost surely, 230420023342 is an apocalyptic number.

30420023342 is a deficient number, since it is larger than the sum of its proper divisors (15617588098).

30420023342 is a wasteful number, since it uses less digits than its factorization.

30420023342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180115.

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 30420023342 its reverse (24332002403), we get a palindrome (54752025745).

The spelling of 30420023342 in words is "thirty billion, four hundred twenty million, twenty-three thousand, three hundred forty-two".

Divisors: 1 2 137 274 619 1238 84803 169606 179357 358714 24571909 49143818 111021983 222043966 15210011671 30420023342