42036217 has 4 divisors (see below), whose sum is σ = 43392256. Its totient is φ = 40680180.

The previous prime is 42036209. The next prime is 42036221. The reversal of 42036217 is 71263024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42036217 - 2³ = 42036209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42036191 and 42036200.

It is not an unprimeable number, because it can be changed into a prime (42036277) 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, 677973 + ... + 678034.

It is an arithmetic number, because the mean of its divisors is an integer number (10848064).

Almost surely, 2^42036217 is an apocalyptic number.

It is an amenable number.

42036217 is a deficient number, since it is larger than the sum of its proper divisors (1356039).

42036217 is a wasteful number, since it uses less digits than its factorization.

42036217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356038.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 42036217 is about 6483.5342985134. The cubic root of 42036217 is about 347.7025494796.

The spelling of 42036217 in words is "forty-two million, thirty-six thousand, two hundred seventeen".