166423171342 has 8 divisors (see below), whose sum is σ = 249642401976. Its totient is φ = 83209037352.

The previous prime is 166423171319. The next prime is 166423171349. The reversal of 166423171342 is 243171324661.

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 = 166423171295 and 166423171304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166423171349) 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, 1191453 + ... + 1323784.

It is an arithmetic number, because the mean of its divisors is an integer number (31205300247).

Almost surely, 2^166423171342 is an apocalyptic number.

166423171342 is a deficient number, since it is larger than the sum of its proper divisors (83219230634).

166423171342 is a wasteful number, since it uses less digits than its factorization.

166423171342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548322.

The product of its digits is 145152, while the sum is 40.

The spelling of 166423171342 in words is "one hundred sixty-six billion, four hundred twenty-three million, one hundred seventy-one thousand, three hundred forty-two".