142622121 has 8 divisors (see below), whose sum is σ = 190299520. Its totient is φ = 95013072.

The previous prime is 142622101. The next prime is 142622141. The reversal of 142622121 is 121226241.

It is an interprime number because it is at equal distance from previous prime (142622101) and next prime (142622141).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142622121 - 2⁵ = 142622089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142622101) 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, 12001 + ... + 20718.

It is an arithmetic number, because the mean of its divisors is an integer number (23787440).

Almost surely, 2^142622121 is an apocalyptic number.

It is an amenable number.

142622121 is a deficient number, since it is larger than the sum of its proper divisors (47677399).

142622121 is a wasteful number, since it uses less digits than its factorization.

142622121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34175.

The product of its digits is 384, while the sum is 21.

The square root of 142622121 is about 11942.4503767024. The cubic root of 142622121 is about 522.4711289497.

Adding to 142622121 its reverse (121226241), we get a palindrome (263848362).

The spelling of 142622121 in words is "one hundred forty-two million, six hundred twenty-two thousand, one hundred twenty-one".