42185212 has 6 divisors (see below), whose sum is σ = 73824128. Its totient is φ = 21092604.

The previous prime is 42185159. The next prime is 42185219. The reversal of 42185212 is 21258124.

It is a super-2 number, since 2×42185212² = 3559184222969888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42185219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5273148 + ... + 5273155.

Almost surely, 2^42185212 is an apocalyptic number.

It is an amenable number.

42185212 is a deficient number, since it is larger than the sum of its proper divisors (31638916).

42185212 is a wasteful number, since it uses less digits than its factorization.

42185212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10546307 (or 10546305 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 42185212 is about 6495.0143956730. The cubic root of 42185212 is about 348.1128691004.

The spelling of 42185212 in words is "forty-two million, one hundred eighty-five thousand, two hundred twelve".