126743522 has 4 divisors (see below), whose sum is σ = 190115286. Its totient is φ = 63371760.

The previous prime is 126743497. The next prime is 126743579. The reversal of 126743522 is 225347621.

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

It can be written as a sum of positive squares in only one way, i.e., 120538441 + 6205081 = 10979^2 + 2491^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31685879 + ... + 31685882.

Almost surely, 2^126743522 is an apocalyptic number.

126743522 is a deficient number, since it is larger than the sum of its proper divisors (63371764).

126743522 is an equidigital number, since it uses as much as digits as its factorization.

126743522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63371763.

The product of its digits is 20160, while the sum is 32.

The square root of 126743522 is about 11258.0425474414. The cubic root of 126743522 is about 502.3139705604.

The spelling of 126743522 in words is "one hundred twenty-six million, seven hundred forty-three thousand, five hundred twenty-two".