720142 has 4 divisors (see below), whose sum is σ = 1080216. Its totient is φ = 360070.

The previous prime is 720133. The next prime is 720151. The reversal of 720142 is 241027.

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

It is an interprime number because it is at equal distance from previous prime (720133) and next prime (720151).

It is a congruent number.

It is an unprimeable number.

720142 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180034 + ... + 180037.

It is an arithmetic number, because the mean of its divisors is an integer number (270054).

2⁷²⁰¹⁴² is an apocalyptic number.

720142 is a deficient number, since it is larger than the sum of its proper divisors (360074).

720142 is a wasteful number, since it uses less digits than its factorization.

720142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360073.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 720142 is about 848.6118076011. The cubic root of 720142 is about 89.6339867612.

Adding to 720142 its reverse (241027), we get a palindrome (961169).

The spelling of 720142 in words is "seven hundred twenty thousand, one hundred forty-two", and thus it is an iban number.