142920001 has 4 divisors (see below), whose sum is σ = 163337152. Its totient is φ = 122502852.

The previous prime is 142919983. The next prime is 142920017. The reversal of 142920001 is 100029241.

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.

It is a cyclic number.

It is not a de Polignac number, because 142920001 - 2⁷ = 142919873 is a prime.

It is a super-2 number, since 2×142920001² = 40852253371680002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142920061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10208565 + ... + 10208578.

It is an arithmetic number, because the mean of its divisors is an integer number (40834288).

Almost surely, 2^142920001 is an apocalyptic number.

It is an amenable number.

142920001 is a deficient number, since it is larger than the sum of its proper divisors (20417151).

142920001 is an equidigital number, since it uses as much as digits as its factorization.

142920001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20417150.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 142920001 is about 11954.9153489266. The cubic root of 142920001 is about 522.8346197190.

Adding to 142920001 its reverse (100029241), we get a palindrome (242949242).

The spelling of 142920001 in words is "one hundred forty-two million, nine hundred twenty thousand, one".