167930121 has 4 divisors (see below), whose sum is σ = 223906832. Its totient is φ = 111953412.

The previous prime is 167930117. The next prime is 167930141. The reversal of 167930121 is 121039761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121039761 = 3 ⋅40346587.

It is not a de Polignac number, because 167930121 - 2² = 167930117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (167930141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27988351 + ... + 27988356.

It is an arithmetic number, because the mean of its divisors is an integer number (55976708).

Almost surely, 2^167930121 is an apocalyptic number.

It is an amenable number.

167930121 is a deficient number, since it is larger than the sum of its proper divisors (55976711).

167930121 is an equidigital number, since it uses as much as digits as its factorization.

167930121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55976710.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 167930121 is about 12958.7854754989. The cubic root of 167930121 is about 551.7083203560.

Adding to 167930121 its reverse (121039761), we get a palindrome (288969882).

The spelling of 167930121 in words is "one hundred sixty-seven million, nine hundred thirty thousand, one hundred twenty-one".