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BaseRepresentation
bin11101111001111001
320020000122
4131321321
512404424
62343025
71020053
oct357171
9206018
10122489
1184034
125aa75
13439a3
14328d3
152645e
hex1de79

122489 has 2 divisors, whose sum is σ = 122490. Its totient is φ = 122488.

The previous prime is 122477. The next prime is 122497. The reversal of 122489 is 984221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115600 + 6889 = 340^2 + 83^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-122489 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (122449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61244 + 61245.

It is an arithmetic number, because the mean of its divisors is an integer number (61245).

2122489 is an apocalyptic number.

It is an amenable number.

122489 is a deficient number, since it is larger than the sum of its proper divisors (1).

122489 is an equidigital number, since it uses as much as digits as its factorization.

122489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

The square root of 122489 is about 349.9842853615. The cubic root of 122489 is about 49.6629328204.

The spelling of 122489 in words is "one hundred twenty-two thousand, four hundred eighty-nine".