321000142 has 4 divisors (see below), whose sum is σ = 481500216. Its totient is φ = 160500070.

The previous prime is 321000131. The next prime is 321000143. The reversal of 321000142 is 241000123.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321000143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80250034 + ... + 80250037.

It is an arithmetic number, because the mean of its divisors is an integer number (120375054).

Almost surely, 2^321000142 is an apocalyptic number.

321000142 is a deficient number, since it is larger than the sum of its proper divisors (160500074).

321000142 is a wasteful number, since it uses less digits than its factorization.

321000142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160500073.

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

The square root of 321000142 is about 17916.4768300020. The cubic root of 321000142 is about 684.7022287206.

Adding to 321000142 its reverse (241000123), we get a palindrome (562000265).

The spelling of 321000142 in words is "three hundred twenty-one million, one hundred forty-two", and thus it is an aban number.