167820442 has 8 divisors (see below), whose sum is σ = 252396000. Its totient is φ = 83688444.

The previous prime is 167820437. The next prime is 167820469. The reversal of 167820442 is 244028761.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 167820398 and 167820407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109942 + ... + 111457.

It is an arithmetic number, because the mean of its divisors is an integer number (31549500).

Almost surely, 2^167820442 is an apocalyptic number.

167820442 is a deficient number, since it is larger than the sum of its proper divisors (84575558).

167820442 is a wasteful number, since it uses less digits than its factorization.

167820442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221780.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 167820442 is about 12954.5529448144. The cubic root of 167820442 is about 551.5881830931.

The spelling of 167820442 in words is "one hundred sixty-seven million, eight hundred twenty thousand, four hundred forty-two".