167420321 has 2 divisors, whose sum is σ = 167420322. Its totient is φ = 167420320.

The previous prime is 167420299. The next prime is 167420329. The reversal of 167420321 is 123024761.

167420321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136773025 + 30647296 = 11695^2 + 5536^2 .

It is a cyclic number.

It is not a de Polignac number, because 167420321 - 2¹⁸ = 167158177 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (167420329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83710160 + 83710161.

It is an arithmetic number, because the mean of its divisors is an integer number (83710161).

Almost surely, 2^167420321 is an apocalyptic number.

It is an amenable number.

167420321 is a deficient number, since it is larger than the sum of its proper divisors (1).

167420321 is an equidigital number, since it uses as much as digits as its factorization.

167420321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 167420321 is about 12939.1004710528. The cubic root of 167420321 is about 551.1494648887.

The spelling of 167420321 in words is "one hundred sixty-seven million, four hundred twenty thousand, three hundred twenty-one".