20354142 has 16 divisors (see below), whose sum is σ = 40945680. Its totient is φ = 6745152.

The previous prime is 20354129. The next prime is 20354153. The reversal of 20354142 is 24145302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8767 + ... + 10842.

It is an arithmetic number, because the mean of its divisors is an integer number (2559105).

Almost surely, 2^20354142 is an apocalyptic number.

20354142 is an abundant number, since it is smaller than the sum of its proper divisors (20591538).

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

20354142 is a wasteful number, since it uses less digits than its factorization.

20354142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19787.

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

The square root of 20354142 is about 4511.5564941603. The cubic root of 20354142 is about 273.0345459376.

Adding to 20354142 its reverse (24145302), we get a palindrome (44499444).

It can be divided in two parts, 203 and 54142, that added together give a palindrome (54345).

The spelling of 20354142 in words is "twenty million, three hundred fifty-four thousand, one hundred forty-two".