742072426 has 8 divisors (see below), whose sum is σ = 1113336900. Its totient is φ = 370960128.

The previous prime is 742072421. The next prime is 742072427. The reversal of 742072426 is 624270247.

It can be written as a sum of positive squares in 2 ways, for example, as 642571801 + 99500625 = 25349^2 + 9975^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 742072391 and 742072400.

It is not an unprimeable number, because it can be changed into a prime (742072421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24951 + ... + 45898.

Almost surely, 2^742072426 is an apocalyptic number.

742072426 is a deficient number, since it is larger than the sum of its proper divisors (371264474).

742072426 is a wasteful number, since it uses less digits than its factorization.

742072426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76088.

The product of its (nonzero) digits is 37632, while the sum is 34.

The square root of 742072426 is about 27241.0063323659. The cubic root of 742072426 is about 905.3477600862.

The spelling of 742072426 in words is "seven hundred forty-two million, seventy-two thousand, four hundred twenty-six".