20842054 has 8 divisors (see below), whose sum is σ = 31303368. Its totient is φ = 10407600.

The previous prime is 20842049. The next prime is 20842093. The reversal of 20842054 is 45024802.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 4647 + ... + 7954.

It is an arithmetic number, because the mean of its divisors is an integer number (3912921).

Almost surely, 2^20842054 is an apocalyptic number.

20842054 is a deficient number, since it is larger than the sum of its proper divisors (10461314).

20842054 is a wasteful number, since it uses less digits than its factorization.

20842054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13430.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 20842054 is about 4565.3098470969. The cubic root of 20842054 is about 275.1989920613.

Adding to 20842054 its reverse (45024802), we get a palindrome (65866856).

The spelling of 20842054 in words is "twenty million, eight hundred forty-two thousand, fifty-four".