42623145 has 32 divisors (see below), whose sum is σ = 76295040. Its totient is φ = 22576320.

The previous prime is 42623143. The next prime is 42623153. The reversal of 42623145 is 54132624.

42623145 is a `hidden beast` number, since 426 + 231 + 4 + 5 = 666.

It is not a de Polignac number, because 42623145 - 2¹ = 42623143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42623143) 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, 20190 + ... + 22200.

It is an arithmetic number, because the mean of its divisors is an integer number (2384220).

Almost surely, 2^42623145 is an apocalyptic number.

42623145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42623145 is a deficient number, since it is larger than the sum of its proper divisors (33671895).

42623145 is a wasteful number, since it uses less digits than its factorization.

42623145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182 (or 2176 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 42623145 is about 6528.6403638124. The cubic root of 42623145 is about 349.3133339811.

Adding to 42623145 its reverse (54132624), we get a palindrome (96755769).

The spelling of 42623145 in words is "forty-two million, six hundred twenty-three thousand, one hundred forty-five".