2142450445 has 4 divisors (see below), whose sum is σ = 2570940540. Its totient is φ = 1713960352.

The previous prime is 2142450433. The next prime is 2142450467. The reversal of 2142450445 is 5440542412.

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 1582607524 + 559842921 = 39782^2 + 23661^2 .

It is a cyclic number.

It is not a de Polignac number, because 2142450445 - 2⁵ = 2142450413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214245040 + ... + 214245049.

It is an arithmetic number, because the mean of its divisors is an integer number (642735135).

Almost surely, 2^2142450445 is an apocalyptic number.

It is an amenable number.

2142450445 is a deficient number, since it is larger than the sum of its proper divisors (428490095).

2142450445 is an equidigital number, since it uses as much as digits as its factorization.

2142450445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428490094.

The product of its (nonzero) digits is 25600, while the sum is 31.

The square root of 2142450445 is about 46286.6119412514. The cubic root of 2142450445 is about 1289.1504221130.

Adding to 2142450445 its reverse (5440542412), we get a palindrome (7582992857).

The spelling of 2142450445 in words is "two billion, one hundred forty-two million, four hundred fifty thousand, four hundred forty-five".