142411321 has 4 divisors (see below), whose sum is σ = 153366052. Its totient is φ = 131456592.

The previous prime is 142411277. The next prime is 142411337. The reversal of 142411321 is 123114241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123114241 = 317 ⋅388373.

It can be written as a sum of positive squares in 2 ways, for example, as 60762025 + 81649296 = 7795^2 + 9036^2 .

It is a cyclic number.

It is not a de Polignac number, because 142411321 - 2¹¹ = 142409273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142411361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5477346 + ... + 5477371.

It is an arithmetic number, because the mean of its divisors is an integer number (38341513).

Almost surely, 2^142411321 is an apocalyptic number.

It is an amenable number.

142411321 is a deficient number, since it is larger than the sum of its proper divisors (10954731).

142411321 is a wasteful number, since it uses less digits than its factorization.

142411321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10954730.

The product of its digits is 192, while the sum is 19.

The square root of 142411321 is about 11933.6214536912. The cubic root of 142411321 is about 522.2135924148.

Adding to 142411321 its reverse (123114241), we get a palindrome (265525562).

The spelling of 142411321 in words is "one hundred forty-two million, four hundred eleven thousand, three hundred twenty-one".