Search a number
-
+
122055143 = 717436449
BaseRepresentation
bin1110100011001…
…10100111100111
322111200001011212
413101212213213
5222221231033
620040022035
73011310620
oct721464747
9274601155
10122055143
1162995921
1234a6191b
131c3964a2
14122d2a47
15aaae748
hex74669e7

122055143 has 4 divisors (see below), whose sum is σ = 139491600. Its totient is φ = 104618688.

The previous prime is 122055127. The next prime is 122055161. The reversal of 122055143 is 341550221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341550221 = 971351751.

It is a cyclic number.

It is not a de Polignac number, because 122055143 - 24 = 122055127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122055163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8718218 + ... + 8718231.

It is an arithmetic number, because the mean of its divisors is an integer number (34872900).

Almost surely, 2122055143 is an apocalyptic number.

122055143 is a deficient number, since it is larger than the sum of its proper divisors (17436457).

122055143 is an equidigital number, since it uses as much as digits as its factorization.

122055143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17436456.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 122055143 is about 11047.8569415068. The cubic root of 122055143 is about 496.0422795537.

The spelling of 122055143 in words is "one hundred twenty-two million, fifty-five thousand, one hundred forty-three".

Divisors: 1 7 17436449 122055143