126788542 has 4 divisors (see below), whose sum is σ = 190182816. Its totient is φ = 63394270.

The previous prime is 126788527. The next prime is 126788573. The reversal of 126788542 is 245887621.

It is a happy number.

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

It is a congruent number.

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, 31697134 + ... + 31697137.

It is an arithmetic number, because the mean of its divisors is an integer number (47545704).

Almost surely, 2^126788542 is an apocalyptic number.

126788542 is a deficient number, since it is larger than the sum of its proper divisors (63394274).

126788542 is an equidigital number, since it uses as much as digits as its factorization.

126788542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63394273.

The product of its digits is 215040, while the sum is 43.

The square root of 126788542 is about 11260.0418294072. The cubic root of 126788542 is about 502.3734384200.

The spelling of 126788542 in words is "one hundred twenty-six million, seven hundred eighty-eight thousand, five hundred forty-two".