167304421 has 2 divisors, whose sum is σ = 167304422. Its totient is φ = 167304420.

The previous prime is 167304407. The next prime is 167304433. The reversal of 167304421 is 124403761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142444225 + 24860196 = 11935^2 + 4986^2 .

It is a cyclic number.

It is not a de Polignac number, because 167304421 - 2¹³ = 167296229 is a prime.

It is a super-2 number, since 2×167304421² = 55981538572290482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 167304421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167304721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83652210 + 83652211.

It is an arithmetic number, because the mean of its divisors is an integer number (83652211).

Almost surely, 2^167304421 is an apocalyptic number.

It is an amenable number.

167304421 is a deficient number, since it is larger than the sum of its proper divisors (1).

167304421 is an equidigital number, since it uses as much as digits as its factorization.

167304421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 167304421 is about 12934.6210226663. The cubic root of 167304421 is about 551.0222541882.

The spelling of 167304421 in words is "one hundred sixty-seven million, three hundred four thousand, four hundred twenty-one".