126690742 has 4 divisors (see below), whose sum is σ = 190036116. Its totient is φ = 63345370.

The previous prime is 126690731. The next prime is 126690757. The reversal of 126690742 is 247096621.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 31672684 + ... + 31672687.

It is an arithmetic number, because the mean of its divisors is an integer number (47509029).

Almost surely, 2^126690742 is an apocalyptic number.

126690742 is a deficient number, since it is larger than the sum of its proper divisors (63345374).

126690742 is an equidigital number, since it uses as much as digits as its factorization.

126690742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63345373.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 126690742 is about 11255.6982013556. The cubic root of 126690742 is about 502.2442344194.

The spelling of 126690742 in words is "one hundred twenty-six million, six hundred ninety thousand, seven hundred forty-two".