126321198 has 32 divisors (see below), whose sum is σ = 264335616. Its totient is φ = 40168128.

The previous prime is 126321193. The next prime is 126321199. The reversal of 126321198 is 891123621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126321193) 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 in 15 ways as a sum of consecutive naturals, for example, 62065 + ... + 64067.

It is an arithmetic number, because the mean of its divisors is an integer number (8260488).

Almost surely, 2^126321198 is an apocalyptic number.

126321198 is an abundant number, since it is smaller than the sum of its proper divisors (138014418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126321198 is a wasteful number, since it uses less digits than its factorization.

126321198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488.

The product of its digits is 5184, while the sum is 33.

The square root of 126321198 is about 11239.2703499827. The cubic root of 126321198 is about 501.7554270724.

The spelling of 126321198 in words is "one hundred twenty-six million, three hundred twenty-one thousand, one hundred ninety-eight".