42045765 has 32 divisors (see below), whose sum is σ = 73113600. Its totient is φ = 20554560.

The previous prime is 42045761. The next prime is 42045767. The reversal of 42045765 is 56754024.

It is not a de Polignac number, because 42045765 - 2² = 42045761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42045761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6456 + ... + 11214.

It is an arithmetic number, because the mean of its divisors is an integer number (2284800).

Almost surely, 2^42045765 is an apocalyptic number.

It is an amenable number.

42045765 is a deficient number, since it is larger than the sum of its proper divisors (31067835).

42045765 is a wasteful number, since it uses less digits than its factorization.

42045765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4817.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 42045765 is about 6484.2705834967. The cubic root of 42045765 is about 347.7288729125.

Adding to 42045765 its reverse (56754024), we get a palindrome (98799789).

The spelling of 42045765 in words is "forty-two million, forty-five thousand, seven hundred sixty-five".