167421137 has 8 divisors (see below), whose sum is σ = 180520704. Its totient is φ = 154353168.

The previous prime is 167421119. The next prime is 167421157. The reversal of 167421137 is 731124761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 167421137 - 2⁶ = 167421073 is a prime.

It is a super-2 number, since 2×167421137² = 56059674228745538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (167421157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3758 + ... + 18680.

It is an arithmetic number, because the mean of its divisors is an integer number (22565088).

Almost surely, 2^167421137 is an apocalyptic number.

It is an amenable number.

167421137 is a deficient number, since it is larger than the sum of its proper divisors (13099567).

167421137 is a wasteful number, since it uses less digits than its factorization.

167421137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15799.

The product of its digits is 7056, while the sum is 32.

The square root of 167421137 is about 12939.1320033455. The cubic root of 167421137 is about 551.1503603141.

Adding to 167421137 its reverse (731124761), we get a palindrome (898545898).

The spelling of 167421137 in words is "one hundred sixty-seven million, four hundred twenty-one thousand, one hundred thirty-seven".