720683042 has 4 divisors (see below), whose sum is σ = 1081024566. Its totient is φ = 360341520.

The previous prime is 720683027. The next prime is 720683063. The reversal of 720683042 is 240386027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240386027 = 7 ⋅34340861.

It can be written as a sum of positive squares in only one way, i.e., 480091921 + 240591121 = 21911^2 + 15511^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180170759 + ... + 180170762.

Almost surely, 2^720683042 is an apocalyptic number.

720683042 is a deficient number, since it is larger than the sum of its proper divisors (360341524).

720683042 is a wasteful number, since it uses less digits than its factorization.

720683042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360341523.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 720683042 is about 26845.5404490206. The cubic root of 720683042 is about 896.5642845166.

The spelling of 720683042 in words is "seven hundred twenty million, six hundred eighty-three thousand, forty-two".