726042442 has 16 divisors (see below), whose sum is σ = 1110677832. Its totient is φ = 355829760.

The previous prime is 726042433. The next prime is 726042491. The reversal of 726042442 is 244240627.

It can be written as a sum of positive squares in 4 ways, for example, as 715616001 + 10426441 = 26751^2 + 3229^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134842 + ... + 140122.

Almost surely, 2^726042442 is an apocalyptic number.

726042442 is a deficient number, since it is larger than the sum of its proper divisors (384635390).

726042442 is a wasteful number, since it uses less digits than its factorization.

726042442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6633.

The product of its (nonzero) digits is 21504, while the sum is 31.

The square root of 726042442 is about 26945.1747442840. The cubic root of 726042442 is about 898.7812482921.

The spelling of 726042442 in words is "seven hundred twenty-six million, forty-two thousand, four hundred forty-two".