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2020143 = 3673381
BaseRepresentation
bin111101101001100101111
310210122010010
413231030233
51004121033
6111144303
723112426
oct7551457
93718103
102020143
11115a844
12815093
13559668
143a82bd
1529d863
hex1ed32f

2020143 has 4 divisors (see below), whose sum is σ = 2693528. Its totient is φ = 1346760.

The previous prime is 2020091. The next prime is 2020147. The reversal of 2020143 is 3410202.

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

It is not a de Polignac number, because 2020143 - 26 = 2020079 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020147) 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, 336688 + ... + 336693.

It is an arithmetic number, because the mean of its divisors is an integer number (673382).

22020143 is an apocalyptic number.

2020143 is a deficient number, since it is larger than the sum of its proper divisors (673385).

2020143 is an equidigital number, since it uses as much as digits as its factorization.

2020143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673384.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2020143 is about 1421.3173466893. The cubic root of 2020143 is about 126.4136693744.

Adding to 2020143 its reverse (3410202), we get a palindrome (5430345).

The spelling of 2020143 in words is "two million, twenty thousand, one hundred forty-three".

Divisors: 1 3 673381 2020143