126189794 has 16 divisors (see below), whose sum is σ = 191344896. Its totient is φ = 62412000.

The previous prime is 126189787. The next prime is 126189803. The reversal of 126189794 is 497981621.

It is a super-3 number, since 3×126189794³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84119 + ... + 85605.

It is an arithmetic number, because the mean of its divisors is an integer number (11959056).

Almost surely, 2^126189794 is an apocalyptic number.

126189794 is a deficient number, since it is larger than the sum of its proper divisors (65155102).

126189794 is a wasteful number, since it uses less digits than its factorization.

126189794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921.

The product of its digits is 217728, while the sum is 47.

The square root of 126189794 is about 11233.4230758037. The cubic root of 126189794 is about 501.5813851690.

The spelling of 126189794 in words is "one hundred twenty-six million, one hundred eighty-nine thousand, seven hundred ninety-four".