142422401 has 16 divisors (see below), whose sum is σ = 163123200. Its totient is φ = 123157200.

The previous prime is 142422383. The next prime is 142422403. The reversal of 142422401 is 104224241.

It is a cyclic number.

It is not a de Polignac number, because 142422401 - 2⁶ = 142422337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142422403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16580 + ... + 23658.

It is an arithmetic number, because the mean of its divisors is an integer number (10195200).

Almost surely, 2^142422401 is an apocalyptic number.

142422401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142422401 is a deficient number, since it is larger than the sum of its proper divisors (20700799).

142422401 is a wasteful number, since it uses less digits than its factorization.

142422401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7180.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 142422401 is about 11934.0856792634. The cubic root of 142422401 is about 522.2271352907.

Adding to 142422401 its reverse (104224241), we get a palindrome (246646642).

The spelling of 142422401 in words is "one hundred forty-two million, four hundred twenty-two thousand, four hundred one".