142322401 has 8 divisors (see below), whose sum is σ = 158555880. Its totient is φ = 126844032.

The previous prime is 142322399. The next prime is 142322443. The reversal of 142322401 is 104223241.

It can be written as a sum of positive squares in 4 ways, for example, as 140625 + 142181776 = 375^2 + 11924^2 .

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 142322401 - 2¹ = 142322399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142322491) 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, 188380 + ... + 189133.

It is an arithmetic number, because the mean of its divisors is an integer number (19819485).

Almost surely, 2^142322401 is an apocalyptic number.

It is an amenable number.

142322401 is a deficient number, since it is larger than the sum of its proper divisors (16233479).

142322401 is a wasteful number, since it uses less digits than its factorization.

142322401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377555.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 142322401 is about 11929.8952635805. The cubic root of 142322401 is about 522.1048817210.

Adding to 142322401 its reverse (104223241), we get a palindrome (246545642).

The spelling of 142322401 in words is "one hundred forty-two million, three hundred twenty-two thousand, four hundred one".