126850561 has 4 divisors (see below), whose sum is σ = 127052224. Its totient is φ = 126648900.

The previous prime is 126850547. The next prime is 126850573. The reversal of 126850561 is 165058621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 126850561 - 2¹⁹ = 126326273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126850501) 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 3 ways as a sum of consecutive naturals, for example, 99885 + ... + 101146.

It is an arithmetic number, because the mean of its divisors is an integer number (31763056).

Almost surely, 2^126850561 is an apocalyptic number.

It is an amenable number.

126850561 is a deficient number, since it is larger than the sum of its proper divisors (201663).

126850561 is an equidigital number, since it uses as much as digits as its factorization.

126850561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201662.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 126850561 is about 11262.7954345269. The cubic root of 126850561 is about 502.4553375649.

The spelling of 126850561 in words is "one hundred twenty-six million, eight hundred fifty thousand, five hundred sixty-one".