126072905 has 8 divisors (see below), whose sum is σ = 172900032. Its totient is φ = 86449968.

The previous prime is 126072899. The next prime is 126072907. The reversal of 126072905 is 509270621.

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 126072905 - 2⁶ = 126072841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126072907) 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, 1801007 + ... + 1801076.

It is an arithmetic number, because the mean of its divisors is an integer number (21612504).

Almost surely, 2^126072905 is an apocalyptic number.

It is an amenable number.

126072905 is a deficient number, since it is larger than the sum of its proper divisors (46827127).

126072905 is an equidigital number, since it uses as much as digits as its factorization.

126072905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3602095.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 126072905 is about 11228.2191375124. The cubic root of 126072905 is about 501.4264665164.

The spelling of 126072905 in words is "one hundred twenty-six million, seventy-two thousand, nine hundred five".