20210420141 has 4 divisors (see below), whose sum is σ = 20218581852. Its totient is φ = 20202258432.

The previous prime is 20210420129. The next prime is 20210420161. The reversal of 20210420141 is 14102401202.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16015914916 + 4194505225 = 126554^2 + 64765^2 .

It is a cyclic number.

It is not a de Polignac number, because 20210420141 - 2⁶ = 20210420077 is a prime.

It is a super-2 number, since 2×20210420141² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210420161) 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, 4077140 + ... + 4082093.

It is an arithmetic number, because the mean of its divisors is an integer number (5054645463).

Almost surely, 2^20210420141 is an apocalyptic number.

It is an amenable number.

20210420141 is a deficient number, since it is larger than the sum of its proper divisors (8161711).

20210420141 is an equidigital number, since it uses as much as digits as its factorization.

20210420141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8161710.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20210420141 its reverse (14102401202), we get a palindrome (34312821343).

The spelling of 20210420141 in words is "twenty billion, two hundred ten million, four hundred twenty thousand, one hundred forty-one".