20452141 has 4 divisors (see below), whose sum is σ = 20787484. Its totient is φ = 20116800.

The previous prime is 20452123. The next prime is 20452147. The reversal of 20452141 is 14125402.

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 4818025 + 15634116 = 2195^2 + 3954^2 .

It is a cyclic number.

It is not a de Polignac number, because 20452141 - 2⁵ = 20452109 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 (20452147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167580 + ... + 167701.

It is an arithmetic number, because the mean of its divisors is an integer number (5196871).

Almost surely, 2^20452141 is an apocalyptic number.

It is an amenable number.

20452141 is a deficient number, since it is larger than the sum of its proper divisors (335343).

20452141 is an equidigital number, since it uses as much as digits as its factorization.

20452141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335342.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 20452141 is about 4522.4043384023. The cubic root of 20452141 is about 273.4720373093.

Adding to 20452141 its reverse (14125402), we get a palindrome (34577543).

It can be divided in two parts, 2045 and 2141, that added together give a triangular number (4186 = T₉₁).

The spelling of 20452141 in words is "twenty million, four hundred fifty-two thousand, one hundred forty-one".