126240742 has 16 divisors (see below), whose sum is σ = 206969472. Its totient is φ = 57490560.

The previous prime is 126240739. The next prime is 126240749. The reversal of 126240742 is 247042621.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 126240742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126240749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58833 + ... + 60940.

It is an arithmetic number, because the mean of its divisors is an integer number (12935592).

Almost surely, 2^126240742 is an apocalyptic number.

126240742 is a deficient number, since it is larger than the sum of its proper divisors (80728730).

126240742 is a wasteful number, since it uses less digits than its factorization.

126240742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119823.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 126240742 is about 11235.6905439764. The cubic root of 126240742 is about 501.6488790849.

The spelling of 126240742 in words is "one hundred twenty-six million, two hundred forty thousand, seven hundred forty-two".