72000142 has 4 divisors (see below), whose sum is σ = 108000216. Its totient is φ = 36000070.

The previous prime is 72000133. The next prime is 72000161. The reversal of 72000142 is 24100027.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18000034 + ... + 18000037.

It is an arithmetic number, because the mean of its divisors is an integer number (27000054).

Almost surely, 2^72000142 is an apocalyptic number.

72000142 is a deficient number, since it is larger than the sum of its proper divisors (36000074).

72000142 is a wasteful number, since it uses less digits than its factorization.

72000142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36000073.

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

The square root of 72000142 is about 8485.2897416647. The cubic root of 72000142 is about 416.0170381027.

Adding to 72000142 its reverse (24100027), we get a palindrome (96100169).

The spelling of 72000142 in words is "seventy-two million, one hundred forty-two", and thus it is an aban number.