126471489 has 4 divisors (see below), whose sum is σ = 168628656. Its totient is φ = 84314324.

The previous prime is 126471487. The next prime is 126471491. The reversal of 126471489 is 984174621.

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: 984174621 = 3 ⋅328058207.

It is an interprime number because it is at equal distance from previous prime (126471487) and next prime (126471491).

It is a cyclic number.

It is not a de Polignac number, because 126471489 - 2¹ = 126471487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126471489.

It is not an unprimeable number, because it can be changed into a prime (126471481) 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, 21078579 + ... + 21078584.

It is an arithmetic number, because the mean of its divisors is an integer number (42157164).

Almost surely, 2^126471489 is an apocalyptic number.

It is an amenable number.

126471489 is a deficient number, since it is larger than the sum of its proper divisors (42157167).

126471489 is an equidigital number, since it uses as much as digits as its factorization.

126471489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42157166.

The product of its digits is 96768, while the sum is 42.

The square root of 126471489 is about 11245.9543392280. The cubic root of 126471489 is about 501.9543365183.

The spelling of 126471489 in words is "one hundred twenty-six million, four hundred seventy-one thousand, four hundred eighty-nine".