727473842 has 4 divisors (see below), whose sum is σ = 1091210766. Its totient is φ = 363736920.

The previous prime is 727473829. The next prime is 727473853. The reversal of 727473842 is 248374727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 248374727 = 613 ⋅405179.

It can be written as a sum of positive squares in only one way, i.e., 526656601 + 200817241 = 22949^2 + 14171^2 .

It is a junction number, because it is equal to n+sod(n) for n = 727473793 and 727473802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181868459 + ... + 181868462.

Almost surely, 2^727473842 is an apocalyptic number.

727473842 is a deficient number, since it is larger than the sum of its proper divisors (363736924).

727473842 is a wasteful number, since it uses less digits than its factorization.

727473842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363736923.

The product of its digits is 526848, while the sum is 44.

The square root of 727473842 is about 26971.7230076241. The cubic root of 727473842 is about 899.3715126577.

The spelling of 727473842 in words is "seven hundred twenty-seven million, four hundred seventy-three thousand, eight hundred forty-two".