142223449 has 8 divisors (see below), whose sum is σ = 146397888. Its totient is φ = 138066480.

The previous prime is 142223447. The next prime is 142223461. The reversal of 142223449 is 944322241.

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 142223449 - 2¹ = 142223447 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 142223449.

It is not an unprimeable number, because it can be changed into a prime (142223447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13164 + ... + 21394.

It is an arithmetic number, because the mean of its divisors is an integer number (18299736).

Almost surely, 2^142223449 is an apocalyptic number.

It is an amenable number.

142223449 is a deficient number, since it is larger than the sum of its proper divisors (4174439).

142223449 is an equidigital number, since it uses as much as digits as its factorization.

142223449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8735.

The product of its digits is 13824, while the sum is 31.

The square root of 142223449 is about 11925.7473141099. The cubic root of 142223449 is about 521.9838529867.

It can be divided in two parts, 14222 and 3449, that added together give a palindrome (17671).

The spelling of 142223449 in words is "one hundred forty-two million, two hundred twenty-three thousand, four hundred forty-nine".