162198421 has 32 divisors (see below), whose sum is σ = 220262400. Its totient is φ = 115577280.

The previous prime is 162198403. The next prime is 162198467. The reversal of 162198421 is 124891261.

It is a happy number.

It is not a de Polignac number, because 162198421 - 2⁵ = 162198389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162198401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40516 + ... + 44338.

It is an arithmetic number, because the mean of its divisors is an integer number (6883200).

Almost surely, 2^162198421 is an apocalyptic number.

162198421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

162198421 is a deficient number, since it is larger than the sum of its proper divisors (58063979).

162198421 is a wasteful number, since it uses less digits than its factorization.

162198421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3889.

The product of its digits is 6912, while the sum is 34.

The square root of 162198421 is about 12735.7143890714. The cubic root of 162198421 is about 545.3586517880.

The spelling of 162198421 in words is "one hundred sixty-two million, one hundred ninety-eight thousand, four hundred twenty-one".