20453043 has 16 divisors (see below), whose sum is σ = 29464736. Its totient is φ = 12545280.

The previous prime is 20453039. The next prime is 20453047. The reversal of 20453043 is 34035402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20453039) and next prime (20453047).

It is not a de Polignac number, because 20453043 - 2² = 20453039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20453047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14823 + ... + 16143.

It is an arithmetic number, because the mean of its divisors is an integer number (1841546).

Almost surely, 2^20453043 is an apocalyptic number.

20453043 is a deficient number, since it is larger than the sum of its proper divisors (9011693).

20453043 is a wasteful number, since it uses less digits than its factorization.

20453043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 20453043 is about 4522.5040630164. The cubic root of 20453043 is about 273.4760575592.

Adding to 20453043 its reverse (34035402), we get a palindrome (54488445).

The spelling of 20453043 in words is "twenty million, four hundred fifty-three thousand, forty-three".