720078442 has 8 divisors (see below), whose sum is σ = 1088363232. Its totient is φ = 357290700.

The previous prime is 720078431. The next prime is 720078451. The reversal of 720078442 is 244870027.

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 = 720078398 and 720078407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1373934 + ... + 1374457.

It is an arithmetic number, because the mean of its divisors is an integer number (136045404).

Almost surely, 2^720078442 is an apocalyptic number.

720078442 is a deficient number, since it is larger than the sum of its proper divisors (368284790).

720078442 is a wasteful number, since it uses less digits than its factorization.

720078442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748524.

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 720078442 is about 26834.2773705572. The cubic root of 720078442 is about 896.3134972360.

The spelling of 720078442 in words is "seven hundred twenty million, seventy-eight thousand, four hundred forty-two".