142622441 has 4 divisors (see below), whose sum is σ = 153593412. Its totient is φ = 131651472.

The previous prime is 142622399. The next prime is 142622461. The reversal of 142622441 is 144226241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71995225 + 70627216 = 8485^2 + 8404^2 .

It is a cyclic number.

It is not a de Polignac number, because 142622441 - 2¹⁰ = 142621417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142622441.

It is not an unprimeable number, because it can be changed into a prime (142622461) 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, 5485466 + ... + 5485491.

It is an arithmetic number, because the mean of its divisors is an integer number (38398353).

Almost surely, 2^142622441 is an apocalyptic number.

It is an amenable number.

142622441 is a deficient number, since it is larger than the sum of its proper divisors (10970971).

142622441 is a wasteful number, since it uses less digits than its factorization.

142622441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10970970.

The product of its digits is 3072, while the sum is 26.

The square root of 142622441 is about 11942.4637742804. The cubic root of 142622441 is about 522.4715197040.

Adding to 142622441 its reverse (144226241), we get a palindrome (286848682).

The spelling of 142622441 in words is "one hundred forty-two million, six hundred twenty-two thousand, four hundred forty-one".