126424405 has 4 divisors (see below), whose sum is σ = 151709292. Its totient is φ = 101139520.

The previous prime is 126424387. The next prime is 126424439. The reversal of 126424405 is 504424621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69255684 + 57168721 = 8322^2 + 7561^2 .

It is not a de Polignac number, because 126424405 - 2⁵ = 126424373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 12642436 + ... + 12642445.

It is an arithmetic number, because the mean of its divisors is an integer number (37927323).

Almost surely, 2^126424405 is an apocalyptic number.

It is an amenable number.

126424405 is a deficient number, since it is larger than the sum of its proper divisors (25284887).

126424405 is an equidigital number, since it uses as much as digits as its factorization.

126424405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25284886.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 126424405 is about 11243.8607693265. The cubic root of 126424405 is about 501.8920380201.

The spelling of 126424405 in words is "one hundred twenty-six million, four hundred twenty-four thousand, four hundred five".