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122388741 = 32106912721
BaseRepresentation
bin1110100101110…
…00000100000101
322112021222210100
413102320010011
5222312414431
620051114313
73014200326
oct722700405
9275258710
10122388741
11630a3522
1234ba2999
131c482297
141237c44d
15ab284e6
hex74b8105

122388741 has 12 divisors (see below), whose sum is σ = 176963020. Its totient is φ = 81509760.

The previous prime is 122388733. The next prime is 122388743. The reversal of 122388741 is 147883221.

It can be written as a sum of positive squares in 2 ways, for example, as 84824100 + 37564641 = 9210^2 + 6129^2 .

It is not a de Polignac number, because 122388741 - 23 = 122388733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122388696 and 122388705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122388743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3261 + ... + 15981.

Almost surely, 2122388741 is an apocalyptic number.

It is an amenable number.

122388741 is a deficient number, since it is larger than the sum of its proper divisors (54574279).

122388741 is a wasteful number, since it uses less digits than its factorization.

122388741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13796 (or 13793 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 122388741 is about 11062.9444995444. The cubic root of 122388741 is about 496.4937918130.

The spelling of 122388741 in words is "one hundred twenty-two million, three hundred eighty-eight thousand, seven hundred forty-one".

Divisors: 1 3 9 1069 3207 9621 12721 38163 114489 13598749 40796247 122388741