20142051 has 4 divisors (see below), whose sum is σ = 26856072. Its totient is φ = 13428032.

The previous prime is 20142049. The next prime is 20142053. The reversal of 20142051 is 15024102.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20142049) and next prime (20142053).

It is a cyclic number.

It is not a de Polignac number, because 20142051 - 2¹ = 20142049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20142051.

It is not an unprimeable number, because it can be changed into a prime (20142053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3357006 + ... + 3357011.

It is an arithmetic number, because the mean of its divisors is an integer number (6714018).

Almost surely, 2^20142051 is an apocalyptic number.

20142051 is a deficient number, since it is larger than the sum of its proper divisors (6714021).

20142051 is an equidigital number, since it uses as much as digits as its factorization.

20142051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6714020.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 20142051 is about 4487.9896390255. The cubic root of 20142051 is about 272.0828890617.

Adding to 20142051 its reverse (15024102), we get a palindrome (35166153).

The spelling of 20142051 in words is "twenty million, one hundred forty-two thousand, fifty-one".