126390265 has 8 divisors (see below), whose sum is σ = 156898440. Its totient is φ = 97625472.

The previous prime is 126390259. The next prime is 126390301. The reversal of 126390265 is 562093621.

It can be written as a sum of positive squares in 4 ways, for example, as 11235904 + 115154361 = 3352^2 + 10731^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126390265 - 2⁷ = 126390137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126390265.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435684 + ... + 435973.

It is an arithmetic number, because the mean of its divisors is an integer number (19612305).

Almost surely, 2^126390265 is an apocalyptic number.

It is an amenable number.

126390265 is a deficient number, since it is larger than the sum of its proper divisors (30508175).

126390265 is an equidigital number, since it uses as much as digits as its factorization.

126390265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871691.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 126390265 is about 11242.3425050120. The cubic root of 126390265 is about 501.8468565095.

The spelling of 126390265 in words is "one hundred twenty-six million, three hundred ninety thousand, two hundred sixty-five".