42770165 has 16 divisors (see below), whose sum is σ = 52764096. Its totient is φ = 33264000.

The previous prime is 42770153. The next prime is 42770177. The reversal of 42770165 is 56107724.

It is an interprime number because it is at equal distance from previous prime (42770153) and next prime (42770177).

It is not a de Polignac number, because 42770165 - 2¹⁰ = 42769141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70865 + ... + 71465.

It is an arithmetic number, because the mean of its divisors is an integer number (3297756).

Almost surely, 2^42770165 is an apocalyptic number.

It is an amenable number.

42770165 is a deficient number, since it is larger than the sum of its proper divisors (9993931).

42770165 is a wasteful number, since it uses less digits than its factorization.

42770165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 42770165 is about 6539.8902895997. The cubic root of 42770165 is about 349.7145018738.

Adding to 42770165 its reverse (56107724), we get a palindrome (98877889).

The spelling of 42770165 in words is "forty-two million, seven hundred seventy thousand, one hundred sixty-five".