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BaseRepresentation
bin11101111000011111
320012220022
4131320133
512404044
62342355
71016564
oct357037
9205808
10122399
1183a62
125a9bb
1343934
143286b
15263ee
hex1de1f

122399 has 2 divisors, whose sum is σ = 122400. Its totient is φ = 122398.

The previous prime is 122393. The next prime is 122401. The reversal of 122399 is 993221.

122399 is nontrivially palindromic in base 13.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-122399 is a prime.

Together with 122401, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61199 + 61200.

It is an arithmetic number, because the mean of its divisors is an integer number (61200).

2122399 is an apocalyptic number.

122399 is a deficient number, since it is larger than the sum of its proper divisors (1).

122399 is an equidigital number, since it uses as much as digits as its factorization.

122399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 26.

The square root of 122399 is about 349.8556845329. The cubic root of 122399 is about 49.6507663970.

The spelling of 122399 in words is "one hundred twenty-two thousand, three hundred ninety-nine".