726542 has 4 divisors (see below), whose sum is σ = 1089816. Its totient is φ = 363270.

The previous prime is 726533. The next prime is 726559. The reversal of 726542 is 245627.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 726542.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181634 + ... + 181637.

It is an arithmetic number, because the mean of its divisors is an integer number (272454).

2⁷²⁶⁵⁴² is an apocalyptic number.

726542 is a deficient number, since it is larger than the sum of its proper divisors (363274).

726542 is a wasteful number, since it uses less digits than its factorization.

726542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363273.

The product of its digits is 3360, while the sum is 26.

The square root of 726542 is about 852.3743309134. The cubic root of 726542 is about 89.8987338367.

The spelling of 726542 in words is "seven hundred twenty-six thousand, five hundred forty-two".