142220489 has 8 divisors (see below), whose sum is σ = 146376000. Its totient is φ = 138081456.

The previous prime is 142220483. The next prime is 142220501. The reversal of 142220489 is 984022241.

It is a happy number.

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 142220489 - 2⁴ = 142220473 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 (142220483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14612 + ... + 22314.

It is an arithmetic number, because the mean of its divisors is an integer number (18297000).

Almost surely, 2^142220489 is an apocalyptic number.

It is an amenable number.

142220489 is a deficient number, since it is larger than the sum of its proper divisors (4155511).

142220489 is an equidigital number, since it uses as much as digits as its factorization.

142220489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8239.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 142220489 is about 11925.6232122267. The cubic root of 142220489 is about 521.9802317299.

The spelling of 142220489 in words is "one hundred forty-two million, two hundred twenty thousand, four hundred eighty-nine".