720220542 has 16 divisors (see below), whose sum is σ = 1440766992. Its totient is φ = 240019200.

The previous prime is 720220537. The next prime is 720220607. The reversal of 720220542 is 245022027.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22542 + ... + 44142.

It is an arithmetic number, because the mean of its divisors is an integer number (90047937).

Almost surely, 2^720220542 is an apocalyptic number.

720220542 is an abundant number, since it is smaller than the sum of its proper divisors (720546450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

720220542 is a wasteful number, since it uses less digits than its factorization.

720220542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27163.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 720220542 is about 26836.9249728802. The cubic root of 720220542 is about 896.3724527439.

Adding to 720220542 its reverse (245022027), we get a palindrome (965242569).

The spelling of 720220542 in words is "seven hundred twenty million, two hundred twenty thousand, five hundred forty-two".