20420010043 has 8 divisors (see below), whose sum is σ = 20757575696. Its totient is φ = 20082535200.

The previous prime is 20420010041. The next prime is 20420010119. The reversal of 20420010043 is 34001002402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20420010043 - 2¹ = 20420010041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20420009999 and 20420010026.

It is not an unprimeable number, because it can be changed into a prime (20420010041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548233 + ... + 584293.

It is an arithmetic number, because the mean of its divisors is an integer number (2594696962).

Almost surely, 2^20420010043 is an apocalyptic number.

20420010043 is a deficient number, since it is larger than the sum of its proper divisors (337565653).

20420010043 is an equidigital number, since it uses as much as digits as its factorization.

20420010043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45405.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20420010043 its reverse (34001002402), we get a palindrome (54421012445).

The spelling of 20420010043 in words is "twenty billion, four hundred twenty million, ten thousand, forty-three".