126398 has 4 divisors (see below), whose sum is σ = 189600. Its totient is φ = 63198.
The previous prime is 126397. The next prime is 126421. The reversal of 126398 is 893621.
126398 is nontrivially palindromic in base 11.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 893621 = 239 ⋅3739.
It is a plaindrome in base 13.
It is a self number, because there is not a number n which added to its sum of digits gives 126398.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (126397) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31598 + ... + 31601.
It is an arithmetic number, because the mean of its divisors is an integer number (47400).
2126398 is an apocalyptic number.
126398 is a deficient number, since it is larger than the sum of its proper divisors (63202).
126398 is an equidigital number, since it uses as much as digits as its factorization.
126398 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 63201.
The product of its digits is 2592, while the sum is 29.
The square root of 126398 is about 355.5249639617. The cubic root of 126398 is about 50.1857093865.
The spelling of 126398 in words is "one hundred twenty-six thousand, three hundred ninety-eight".
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