142223441 has 4 divisors (see below), whose sum is σ = 142261812. Its totient is φ = 142185072.

The previous prime is 142223413. The next prime is 142223447. The reversal of 142223441 is 144322241.

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 97614400 + 44609041 = 9880^2 + 6679^2 .

It is a cyclic number.

It is not a de Polignac number, because 142223441 - 2¹⁰ = 142222417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142223447) 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, 12950 + ... + 21263.

It is an arithmetic number, because the mean of its divisors is an integer number (35565453).

Almost surely, 2^142223441 is an apocalyptic number.

It is an amenable number.

142223441 is a deficient number, since it is larger than the sum of its proper divisors (38371).

142223441 is an equidigital number, since it uses as much as digits as its factorization.

142223441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38370.

The product of its digits is 1536, while the sum is 23.

The square root of 142223441 is about 11925.7469787012. The cubic root of 142223441 is about 521.9838431996.

Adding to 142223441 its reverse (144322241), we get a palindrome (286545682).

The spelling of 142223441 in words is "one hundred forty-two million, two hundred twenty-three thousand, four hundred forty-one".