147021 has 8 divisors (see below), whose sum is σ = 224064. Its totient is φ = 84000.

The previous prime is 147011. The next prime is 147029. The reversal of 147021 is 120741.

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

It is not a de Polignac number, because 147021 - 2⁵ = 146989 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147029) 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, 3480 + ... + 3521.

It is an arithmetic number, because the mean of its divisors is an integer number (28008).

2¹⁴⁷⁰²¹ is an apocalyptic number.

It is an amenable number.

147021 is a deficient number, since it is larger than the sum of its proper divisors (77043).

147021 is an equidigital number, since it uses as much as digits as its factorization.

147021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7011.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 147021 is about 383.4331754035. The cubic root of 147021 is about 52.7788339175.

Adding to 147021 its reverse (120741), we get a palindrome (267762).

The spelling of 147021 in words is "one hundred forty-seven thousand, twenty-one", and thus it is an iban number.