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122657141 = 196455639
BaseRepresentation
bin1110100111110…
…01100101110101
322112210121222002
413103321211311
5222400012031
620100545045
73016365665
oct723714565
9275717862
10122657141
1163267142
12350b2185
131c5474b9
141240c1a5
15ab7cccb
hex74f9975

122657141 has 4 divisors (see below), whose sum is σ = 129112800. Its totient is φ = 116201484.

The previous prime is 122657123. The next prime is 122657177. The reversal of 122657141 is 141756221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122657141 - 26 = 122657077 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 (122657341) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3227801 + ... + 3227838.

It is an arithmetic number, because the mean of its divisors is an integer number (32278200).

Almost surely, 2122657141 is an apocalyptic number.

It is an amenable number.

122657141 is a deficient number, since it is larger than the sum of its proper divisors (6455659).

122657141 is an equidigital number, since it uses as much as digits as its factorization.

122657141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6455658.

The product of its digits is 3360, while the sum is 29.

The square root of 122657141 is about 11075.0684422264. The cubic root of 122657141 is about 496.8564658039.

The spelling of 122657141 in words is "one hundred twenty-two million, six hundred fifty-seven thousand, one hundred forty-one".

Divisors: 1 19 6455639 122657141