167342421 has 4 divisors (see below), whose sum is σ = 223123232. Its totient is φ = 111561612.

The previous prime is 167342401. The next prime is 167342423. The reversal of 167342421 is 124243761.

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.

It is not a de Polignac number, because 167342421 - 2⁵ = 167342389 is a prime.

It is a super-2 number, since 2×167342421² = 56006971732282482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167342423) 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, 27890401 + ... + 27890406.

It is an arithmetic number, because the mean of its divisors is an integer number (55780808).

Almost surely, 2^167342421 is an apocalyptic number.

It is an amenable number.

167342421 is a deficient number, since it is larger than the sum of its proper divisors (55780811).

167342421 is an equidigital number, since it uses as much as digits as its factorization.

167342421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55780810.

The product of its digits is 8064, while the sum is 30.

The square root of 167342421 is about 12936.0898651795. The cubic root of 167342421 is about 551.0639690862.

It can be divided in two parts, 16 and 7342421, that added together give a palindrome (7342437).

The spelling of 167342421 in words is "one hundred sixty-seven million, three hundred forty-two thousand, four hundred twenty-one".