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122130164 = 22134015857
BaseRepresentation
bin1110100011110…
…00111011110100
322111210212002102
413101320323310
5222231131124
620041401232
73012042422
oct721707364
9274725072
10122130164
1162a37222
1234a99218
131c3c1690
1412312112
15aac6aae
hex7478ef4

122130164 has 24 divisors (see below), whose sum is σ = 230781768. Its totient is φ = 56217600.

The previous prime is 122130163. The next prime is 122130181. The reversal of 122130164 is 461031221.

It can be written as a sum of positive squares in 4 ways, for example, as 64673764 + 57456400 = 8042^2 + 7580^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122130163) 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, 17924 + ... + 23780.

It is an arithmetic number, because the mean of its divisors is an integer number (9615907).

Almost surely, 2122130164 is an apocalyptic number.

It is an amenable number.

122130164 is a deficient number, since it is larger than the sum of its proper divisors (108651604).

122130164 is a wasteful number, since it uses less digits than its factorization.

122130164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6275 (or 6273 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 122130164 is about 11051.2516938128. The cubic root of 122130164 is about 496.1438892718.

Adding to 122130164 its reverse (461031221), we get a palindrome (583161385).

The spelling of 122130164 in words is "one hundred twenty-two million, one hundred thirty thousand, one hundred sixty-four".

Divisors: 1 2 4 13 26 52 401 802 1604 5213 5857 10426 11714 20852 23428 76141 152282 304564 2348657 4697314 9394628 30532541 61065082 122130164