320100142 has 4 divisors (see below), whose sum is σ = 480150216. Its totient is φ = 160050070.

The previous prime is 320100139. The next prime is 320100149. The reversal of 320100142 is 241001023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241001023 = 11443 ⋅21061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320100149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80025034 + ... + 80025037.

It is an arithmetic number, because the mean of its divisors is an integer number (120037554).

Almost surely, 2^320100142 is an apocalyptic number.

320100142 is a deficient number, since it is larger than the sum of its proper divisors (160050074).

320100142 is a wasteful number, since it uses less digits than its factorization.

320100142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160050073.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 320100142 is about 17891.3426550385. The cubic root of 320100142 is about 684.0617214005.

Adding to 320100142 its reverse (241001023), we get a palindrome (561101165).

The spelling of 320100142 in words is "three hundred twenty million, one hundred thousand, one hundred forty-two".