126485921 has 4 divisors (see below), whose sum is σ = 130566144. Its totient is φ = 122405700.

The previous prime is 126485903. The next prime is 126485929. The reversal of 126485921 is 129584621.

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, and also an emirpimes, since its reverse is a distinct semiprime: 129584621 = 199 ⋅651179.

It is a cyclic number.

It is not a de Polignac number, because 126485921 - 2⁶ = 126485857 is a prime.

It is a super-2 number, since 2×126485921² = 31997376422436482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126485929) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2040065 + ... + 2040126.

It is an arithmetic number, because the mean of its divisors is an integer number (32641536).

Almost surely, 2^126485921 is an apocalyptic number.

It is an amenable number.

126485921 is a deficient number, since it is larger than the sum of its proper divisors (4080223).

126485921 is an equidigital number, since it uses as much as digits as its factorization.

126485921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080222.

The product of its digits is 34560, while the sum is 38.

The square root of 126485921 is about 11246.5959738936. The cubic root of 126485921 is about 501.9734289095.

The spelling of 126485921 in words is "one hundred twenty-six million, four hundred eighty-five thousand, nine hundred twenty-one".