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122797141 = 882113921
BaseRepresentation
bin1110101000110…
…11110001010101
322120001202000021
413110123301111
5222414002031
620103545141
73020521105
oct724336125
9276052007
10122797141
1163352345
123515b1b1
131c59613c
1412447205
15aba9511
hex751bc55

122797141 has 4 divisors (see below), whose sum is σ = 122819884. Its totient is φ = 122774400.

The previous prime is 122797123. The next prime is 122797151. The reversal of 122797141 is 141797221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141797221 = 178341013.

It can be written as a sum of positive squares in 2 ways, for example, as 75325041 + 47472100 = 8679^2 + 6890^2 .

It is a cyclic number.

It is not a de Polignac number, because 122797141 - 29 = 122796629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122797097 and 122797106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122797151) 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, 1861 + ... + 15781.

It is an arithmetic number, because the mean of its divisors is an integer number (30704971).

Almost surely, 2122797141 is an apocalyptic number.

It is an amenable number.

122797141 is a deficient number, since it is larger than the sum of its proper divisors (22743).

122797141 is an equidigital number, since it uses as much as digits as its factorization.

122797141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22742.

The product of its digits is 7056, while the sum is 34.

The square root of 122797141 is about 11081.3871424114. The cubic root of 122797141 is about 497.0454300891.

The spelling of 122797141 in words is "one hundred twenty-two million, seven hundred ninety-seven thousand, one hundred forty-one".

Divisors: 1 8821 13921 122797141