147002121 has 28 divisors (see below), whose sum is σ = 251897152. Its totient is φ = 83998296.

The previous prime is 147002113. The next prime is 147002137. The reversal of 147002121 is 121200741.

It is not a de Polignac number, because 147002121 - 2³ = 147002113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 147002094 and 147002103.

It is not an unprimeable number, because it can be changed into a prime (147002171) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 9301 + ... + 19506.

Almost surely, 2^147002121 is an apocalyptic number.

It is an amenable number.

147002121 is a deficient number, since it is larger than the sum of its proper divisors (104895031).

147002121 is an frugal number, since it uses more digits than its factorization.

147002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28832 (or 28817 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 147002121 is about 12124.4431212324. The cubic root of 147002121 is about 527.7657470679.

Adding to 147002121 its reverse (121200741), we get a palindrome (268202862).

The spelling of 147002121 in words is "one hundred forty-seven million, two thousand, one hundred twenty-one".