142444001 has 16 divisors (see below), whose sum is σ = 164640000. Its totient is φ = 120719808.

The previous prime is 142443989. The next prime is 142444021. The reversal of 142444001 is 100444241.

It is a happy number.

142444001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 142444001 - 2¹⁰ = 142442977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142444021) 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, 407975 + ... + 408323.

It is an arithmetic number, because the mean of its divisors is an integer number (10290000).

Almost surely, 2^142444001 is an apocalyptic number.

It is an amenable number.

142444001 is a deficient number, since it is larger than the sum of its proper divisors (22195999).

142444001 is a wasteful number, since it uses less digits than its factorization.

142444001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848.

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

The square root of 142444001 is about 11934.9906158321. The cubic root of 142444001 is about 522.2535345459.

Adding to 142444001 its reverse (100444241), we get a palindrome (242888242).

The spelling of 142444001 in words is "one hundred forty-two million, four hundred forty-four thousand, one".