20514320142 has 16 divisors (see below), whose sum is σ = 41068370640. Its totient is φ = 6831484992.

The previous prime is 20514320107. The next prime is 20514320207. The reversal of 20514320142 is 24102341502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1648717 + ... + 1661112.

It is an arithmetic number, because the mean of its divisors is an integer number (2566773165).

Almost surely, 2^20514320142 is an apocalyptic number.

20514320142 is an abundant number, since it is smaller than the sum of its proper divisors (20554050498).

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

20514320142 is a wasteful number, since it uses less digits than its factorization.

20514320142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3310867.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 20514320142 its reverse (24102341502), we get a palindrome (44616661644).

The spelling of 20514320142 in words is "twenty billion, five hundred fourteen million, three hundred twenty thousand, one hundred forty-two".