142320413 has 8 divisors (see below), whose sum is σ = 152186040. Its totient is φ = 132620800.

The previous prime is 142320407. The next prime is 142320421. The reversal of 142320413 is 314023241.

It can be written as a sum of positive squares in 4 ways, for example, as 99640324 + 42680089 = 9982^2 + 6533^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142320413 - 2⁴ = 142320397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142320443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39728 + ... + 43161.

It is an arithmetic number, because the mean of its divisors is an integer number (19023255).

Almost surely, 2^142320413 is an apocalyptic number.

It is an amenable number.

142320413 is a deficient number, since it is larger than the sum of its proper divisors (9865627).

142320413 is a wasteful number, since it uses less digits than its factorization.

142320413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83007.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 142320413 is about 11929.8119431951. The cubic root of 142320413 is about 522.1024507396.

Adding to 142320413 its reverse (314023241), we get a palindrome (456343654).

The spelling of 142320413 in words is "one hundred forty-two million, three hundred twenty thousand, four hundred thirteen".