142240001 has 8 divisors (see below), whose sum is σ = 148646784. Its totient is φ = 135974160.

The previous prime is 142239971. The next prime is 142240009. The reversal of 142240001 is 100042241.

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 142240001 - 2²⁶ = 75131137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142240009) 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 7 ways as a sum of consecutive naturals, for example, 33170 + ... + 37211.

It is an arithmetic number, because the mean of its divisors is an integer number (18580848).

Almost surely, 2^142240001 is an apocalyptic number.

It is an amenable number.

142240001 is a deficient number, since it is larger than the sum of its proper divisors (6406783).

142240001 is an equidigital number, since it uses as much as digits as its factorization.

142240001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70471.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 142240001 is about 11926.4412546241. The cubic root of 142240001 is about 522.0041017377.

Adding to 142240001 its reverse (100042241), we get a palindrome (242282242).

The spelling of 142240001 in words is "one hundred forty-two million, two hundred forty thousand, one".