126281994 has 32 divisors (see below), whose sum is σ = 255467520. Its totient is φ = 41613552.

The previous prime is 126281993. The next prime is 126282019. The reversal of 126281994 is 499182621.

It is not an unprimeable number, because it can be changed into a prime (126281993) 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, 329527 + ... + 329909.

It is an arithmetic number, because the mean of its divisors is an integer number (7983360).

Almost surely, 2^126281994 is an apocalyptic number.

126281994 is an abundant number, since it is smaller than the sum of its proper divisors (129185526).

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

126281994 is a wasteful number, since it uses less digits than its factorization.

126281994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874.

The product of its digits is 62208, while the sum is 42.

The square root of 126281994 is about 11237.5261512488. The cubic root of 126281994 is about 501.7035148165.

The spelling of 126281994 in words is "one hundred twenty-six million, two hundred eighty-one thousand, nine hundred ninety-four".