20142453 has 4 divisors (see below), whose sum is σ = 26856608. Its totient is φ = 13428300.

The previous prime is 20142427. The next prime is 20142481. The reversal of 20142453 is 35424102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20142453 - 2⁶ = 20142389 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 3357073 + ... + 3357078.

It is an arithmetic number, because the mean of its divisors is an integer number (6714152).

Almost surely, 2^20142453 is an apocalyptic number.

It is an amenable number.

20142453 is a deficient number, since it is larger than the sum of its proper divisors (6714155).

20142453 is an equidigital number, since it uses as much as digits as its factorization.

20142453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6714154.

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

The square root of 20142453 is about 4488.0344250017. The cubic root of 20142453 is about 272.0846991487.

Adding to 20142453 its reverse (35424102), we get a palindrome (55566555).

The spelling of 20142453 in words is "twenty million, one hundred forty-two thousand, four hundred fifty-three".