126445961 has 4 divisors (see below), whose sum is σ = 126473424. Its totient is φ = 126418500.

The previous prime is 126445919. The next prime is 126445967. The reversal of 126445961 is 169544621.

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: 169544621 = 17 ⋅9973213.

It is a cyclic number.

It is not a de Polignac number, because 126445961 - 2¹⁰ = 126444937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126445967) 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, 4955 + ... + 16656.

It is an arithmetic number, because the mean of its divisors is an integer number (31618356).

Almost surely, 2^126445961 is an apocalyptic number.

It is an amenable number.

126445961 is a deficient number, since it is larger than the sum of its proper divisors (27463).

126445961 is an equidigital number, since it uses as much as digits as its factorization.

126445961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27462.

The product of its digits is 51840, while the sum is 38.

The square root of 126445961 is about 11244.8192960136. The cubic root of 126445961 is about 501.9205614420.

The spelling of 126445961 in words is "one hundred twenty-six million, four hundred forty-five thousand, nine hundred sixty-one".