213166042 has 8 divisors (see below), whose sum is σ = 322737696. Its totient is φ = 105586812.

The previous prime is 213166027. The next prime is 213166049. The reversal of 213166042 is 240661312.

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

It is a super-2 number, since 2×213166042² = 90879522923891528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213165998 and 213166016.

It is not an unprimeable number, because it can be changed into a prime (213166049) 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, 497838 + ... + 498265.

It is an arithmetic number, because the mean of its divisors is an integer number (40342212).

Almost surely, 2^213166042 is an apocalyptic number.

213166042 is a deficient number, since it is larger than the sum of its proper divisors (109571654).

213166042 is a wasteful number, since it uses less digits than its factorization.

213166042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996212.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 213166042 is about 14600.2069163420. The cubic root of 213166042 is about 597.3644044937.

The spelling of 213166042 in words is "two hundred thirteen million, one hundred sixty-six thousand, forty-two".