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642472101274246 = 2536199361599331
BaseRepresentation
bin1001001000010100110011000…
…1010111111110001010000110
310010020210201210101111122020021
42102011030301113332022012
51133202230330411233441
610154231335254325354
7252220035411414505
oct22205146127761206
93106721711448207
10642472101274246
11176790984a57751
126008349295985a
1321764b22837269
14b491b5c0b083c
154e422915db3d1
hex24853315fe286

642472101274246 has 16 divisors (see below), whose sum is σ = 997987903690608. Its totient is φ = 310008189909600.

The previous prime is 642472101274153. The next prime is 642472101274261.

642472101274246 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 642472101274193 and 642472101274202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49680793200 + ... + 49680806131.

It is an arithmetic number, because the mean of its divisors is an integer number (62374243980663).

Almost surely, 2642472101274246 is an apocalyptic number.

642472101274246 is a deficient number, since it is larger than the sum of its proper divisors (355515802416362).

642472101274246 is a wasteful number, since it uses less digits than its factorization.

642472101274246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99361599447.

The product of its (nonzero) digits is 7225344, while the sum is 52.

The spelling of 642472101274246 in words is "six hundred forty-two trillion, four hundred seventy-two billion, one hundred one million, two hundred seventy-four thousand, two hundred forty-six".

Divisors: 1 2 53 61 106 122 3233 6466 99361599331 198723198662 5266164764543 6061057559191 10532329529086 12122115118382 321236050637123 642472101274246