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122143541 = 1329173221
BaseRepresentation
bin1110100011111…
…00001100110101
322111211112102212
413101330030311
5222232043131
620041543205
73012126422
oct721741465
9274745385
10122143541
1162a46283
1234aa4b05
131c3c77b0
1412316d49
15aacaa2b
hex747c335

122143541 has 8 divisors (see below), whose sum is σ = 131625144. Its totient is φ = 112674240.

The previous prime is 122143531. The next prime is 122143543. The reversal of 122143541 is 145341221.

It can be written as a sum of positive squares in 4 ways, for example, as 52504516 + 69639025 = 7246^2 + 8345^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122143541 - 214 = 122127157 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 (122143543) 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, 36311 + ... + 39531.

It is an arithmetic number, because the mean of its divisors is an integer number (16453143).

Almost surely, 2122143541 is an apocalyptic number.

It is an amenable number.

122143541 is a deficient number, since it is larger than the sum of its proper divisors (9481603).

122143541 is a wasteful number, since it uses less digits than its factorization.

122143541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6151.

The product of its digits is 960, while the sum is 23.

The square root of 122143541 is about 11051.8569028014. The cubic root of 122143541 is about 496.1620029365.

Adding to 122143541 its reverse (145341221), we get a palindrome (267484762).

The spelling of 122143541 in words is "one hundred twenty-two million, one hundred forty-three thousand, five hundred forty-one".

Divisors: 1 13 2917 3221 37921 41873 9395657 122143541