42165436 has 6 divisors (see below), whose sum is σ = 73789520. Its totient is φ = 21082716.

The previous prime is 42165421. The next prime is 42165467. The reversal of 42165436 is 63456124.

It is a junction number, because it is equal to n+sod(n) for n = 42165398 and 42165407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5270676 + ... + 5270683.

Almost surely, 2^42165436 is an apocalyptic number.

It is an amenable number.

42165436 is a deficient number, since it is larger than the sum of its proper divisors (31624084).

42165436 is a wasteful number, since it uses less digits than its factorization.

42165436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10541363 (or 10541361 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 42165436 is about 6493.4918187367. The cubic root of 42165436 is about 348.0584633358.

The spelling of 42165436 in words is "forty-two million, one hundred sixty-five thousand, four hundred thirty-six".