20142045 has 48 divisors (see below), whose sum is σ = 43535232. Its totient is φ = 8369280.

The previous prime is 20142019. The next prime is 20142047. The reversal of 20142045 is 54024102.

20142045 is a `hidden beast` number, since 201 + 420 + 45 = 666.

It is not a de Polignac number, because 20142045 - 2⁵ = 20142013 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20142047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 559 + ... + 6371.

It is an arithmetic number, because the mean of its divisors is an integer number (906984).

Almost surely, 2^20142045 is an apocalyptic number.

It is an amenable number.

20142045 is an abundant number, since it is smaller than the sum of its proper divisors (23393187).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20142045 is a wasteful number, since it uses less digits than its factorization.

20142045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5842 (or 5839 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 20142045 is about 4487.9889705747. The cubic root of 20142045 is about 272.0828620453.

Adding to 20142045 its reverse (54024102), we get a palindrome (74166147).

The spelling of 20142045 in words is "twenty million, one hundred forty-two thousand, forty-five".