126245005 has 8 divisors (see below), whose sum is σ = 151608600. Its totient is φ = 100919616.

The previous prime is 126244981. The next prime is 126245017. The reversal of 126245005 is 500542621.

It can be written as a sum of positive squares in 4 ways, for example, as 1297321 + 124947684 = 1139^2 + 11178^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 126245005 - 2⁵ = 126244973 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 1690 + ... + 15979.

It is an arithmetic number, because the mean of its divisors is an integer number (18951075).

Almost surely, 2^126245005 is an apocalyptic number.

It is an amenable number.

126245005 is a deficient number, since it is larger than the sum of its proper divisors (25363595).

126245005 is a wasteful number, since it uses less digits than its factorization.

126245005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19103.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 126245005 is about 11235.8802503409. The cubic root of 126245005 is about 501.6545257170.

Adding to 126245005 its reverse (500542621), we get a palindrome (626787626).

The spelling of 126245005 in words is "one hundred twenty-six million, two hundred forty-five thousand, five".