142144001 has 4 divisors (see below), whose sum is σ = 143085504. Its totient is φ = 141202500.

The previous prime is 142143983. The next prime is 142144003. The reversal of 142144001 is 100441241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100441241 = 67 ⋅1499123.

It is a cyclic number.

It is not a de Polignac number, because 142144001 - 2¹⁴ = 142127617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142144003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470525 + ... + 470826.

It is an arithmetic number, because the mean of its divisors is an integer number (35771376).

Almost surely, 2^142144001 is an apocalyptic number.

It is an amenable number.

142144001 is a deficient number, since it is larger than the sum of its proper divisors (941503).

142144001 is an equidigital number, since it uses as much as digits as its factorization.

142144001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941502.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 142144001 is about 11922.4159045053. The cubic root of 142144001 is about 521.8866390654.

Adding to 142144001 its reverse (100441241), we get a palindrome (242585242).

The spelling of 142144001 in words is "one hundred forty-two million, one hundred forty-four thousand, one".