42143045 has 32 divisors (see below), whose sum is σ = 61440000. Its totient is φ = 27107136.

The previous prime is 42143029. The next prime is 42143077. The reversal of 42143045 is 54034124.

It is not a de Polignac number, because 42143045 - 2⁴ = 42143029 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42143045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84206 + ... + 84704.

It is an arithmetic number, because the mean of its divisors is an integer number (1920000).

Almost surely, 2^42143045 is an apocalyptic number.

It is an amenable number.

42143045 is a deficient number, since it is larger than the sum of its proper divisors (19296955).

42143045 is a wasteful number, since it uses less digits than its factorization.

42143045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 42143045 is about 6491.7674788920. The cubic root of 42143045 is about 347.9968429053.

Adding to 42143045 its reverse (54034124), we get a palindrome (96177169).

The spelling of 42143045 in words is "forty-two million, one hundred forty-three thousand, forty-five".