1209390126 has 16 divisors (see below), whose sum is σ = 2764320384. Its totient is φ = 345540024.

The previous prime is 1209390113. The next prime is 1209390131. The reversal of 1209390126 is 6210939021.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14397460 + ... + 14397543.

It is an arithmetic number, because the mean of its divisors is an integer number (172770024).

Almost surely, 2^1209390126 is an apocalyptic number.

1209390126 is an abundant number, since it is smaller than the sum of its proper divisors (1554930258).

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

1209390126 is a wasteful number, since it uses less digits than its factorization.

1209390126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28795015.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 1209390126 is about 34776.2868345659. The cubic root of 1209390126 is about 1065.4231755226.

The spelling of 1209390126 in words is "one billion, two hundred nine million, three hundred ninety thousand, one hundred twenty-six".