126905473 has 2 divisors, whose sum is σ = 126905474. Its totient is φ = 126905472.

The previous prime is 126905453. The next prime is 126905477. The reversal of 126905473 is 374509621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95902849 + 31002624 = 9793^2 + 5568^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126905473 is a prime.

It is a super-2 number, since 2×126905473² = 32209998154707458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126905477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63452736 + 63452737.

It is an arithmetic number, because the mean of its divisors is an integer number (63452737).

Almost surely, 2^126905473 is an apocalyptic number.

It is an amenable number.

126905473 is a deficient number, since it is larger than the sum of its proper divisors (1).

126905473 is an equidigital number, since it uses as much as digits as its factorization.

126905473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 126905473 is about 11265.2329314577. The cubic root of 126905473 is about 502.5278292880.

The spelling of 126905473 in words is "one hundred twenty-six million, nine hundred five thousand, four hundred seventy-three".