126405273 has 8 divisors (see below), whose sum is σ = 168718528. Its totient is φ = 84181104.

The previous prime is 126405269. The next prime is 126405277. The reversal of 126405273 is 372504621.

It is an interprime number because it is at equal distance from previous prime (126405269) and next prime (126405277).

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

It is not a de Polignac number, because 126405273 - 2² = 126405269 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126405273.

It is not an unprimeable number, because it can be changed into a prime (126405277) 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 7 ways as a sum of consecutive naturals, for example, 18886 + ... + 24687.

It is an arithmetic number, because the mean of its divisors is an integer number (21089816).

Almost surely, 2^126405273 is an apocalyptic number.

It is an amenable number.

126405273 is a deficient number, since it is larger than the sum of its proper divisors (42313255).

126405273 is an equidigital number, since it uses as much as digits as its factorization.

126405273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44543.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 126405273 is about 11243.0099617496. The cubic root of 126405273 is about 501.8667193777.

Adding to 126405273 its reverse (372504621), we get a palindrome (498909894).

The spelling of 126405273 in words is "one hundred twenty-six million, four hundred five thousand, two hundred seventy-three".