42750765 has 24 divisors (see below), whose sum is σ = 74257560. Its totient is φ = 22752384.

The previous prime is 42750761. The next prime is 42750769. The reversal of 42750765 is 56705724.

It is an interprime number because it is at equal distance from previous prime (42750761) and next prime (42750769).

It can be written as a sum of positive squares in 4 ways, for example, as 6245001 + 36505764 = 2499^2 + 6042^2 .

It is not a de Polignac number, because 42750765 - 2² = 42750761 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42750761) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34171 + ... + 35399.

It is an arithmetic number, because the mean of its divisors is an integer number (3094065).

Almost surely, 2^42750765 is an apocalyptic number.

42750765 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42750765 is a deficient number, since it is larger than the sum of its proper divisors (31506795).

42750765 is a wasteful number, since it uses less digits than its factorization.

42750765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013 (or 2010 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 42750765 is about 6538.4069160614. The cubic root of 42750765 is about 349.6616185350.

The spelling of 42750765 in words is "forty-two million, seven hundred fifty thousand, seven hundred sixty-five".