45142871 has 4 divisors (see below), whose sum is σ = 47798352. Its totient is φ = 42487392.

The previous prime is 45142861. The next prime is 45142873. The reversal of 45142871 is 17824154.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45142871 - 2⁶ = 45142807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45142873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1327715 + ... + 1327748.

It is an arithmetic number, because the mean of its divisors is an integer number (11949588).

Almost surely, 2^45142871 is an apocalyptic number.

45142871 is a deficient number, since it is larger than the sum of its proper divisors (2655481).

45142871 is a wasteful number, since it uses less digits than its factorization.

45142871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2655480.

The product of its digits is 8960, while the sum is 32.

The square root of 45142871 is about 6718.8444691033. The cubic root of 45142871 is about 356.0653601115.

The spelling of 45142871 in words is "forty-five million, one hundred forty-two thousand, eight hundred seventy-one".