147412021 has 2 divisors, whose sum is σ = 147412022. Its totient is φ = 147412020.

The previous prime is 147412019. The next prime is 147412063. The reversal of 147412021 is 120214741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143760100 + 3651921 = 11990^2 + 1911^2 .

It is an emirp because it is prime and its reverse (120214741) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 147412021 - 2¹ = 147412019 is a prime.

Together with 147412019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 147411983 and 147412001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147412721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73706010 + 73706011.

It is an arithmetic number, because the mean of its divisors is an integer number (73706011).

Almost surely, 2^147412021 is an apocalyptic number.

It is an amenable number.

147412021 is a deficient number, since it is larger than the sum of its proper divisors (1).

147412021 is an equidigital number, since it uses as much as digits as its factorization.

147412021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 147412021 is about 12141.3352231128. The cubic root of 147412021 is about 528.2558316483.

Adding to 147412021 its reverse (120214741), we get a palindrome (267626762).

The spelling of 147412021 in words is "one hundred forty-seven million, four hundred twelve thousand, twenty-one".