20453142 has 32 divisors (see below), whose sum is σ = 43545600. Its totient is φ = 6382208.

The previous prime is 20453123. The next prime is 20453171. The reversal of 20453142 is 24135402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23959 + ... + 24797.

It is an arithmetic number, because the mean of its divisors is an integer number (1360800).

Almost surely, 2^20453142 is an apocalyptic number.

20453142 is an abundant number, since it is smaller than the sum of its proper divisors (23092458).

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

20453142 is a wasteful number, since it uses less digits than its factorization.

20453142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 20453142 is about 4522.5150082670. The cubic root of 20453142 is about 273.4764987989.

Adding to 20453142 its reverse (24135402), we get a palindrome (44588544).

The spelling of 20453142 in words is "twenty million, four hundred fifty-three thousand, one hundred forty-two".