2123442428 has 6 divisors (see below), whose sum is σ = 3716024256. Its totient is φ = 1061721212.

The previous prime is 2123442353. The next prime is 2123442463. The reversal of 2123442428 is 8242443212.

It is a super-3 number, since 3×2123442428³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2123442394 and 2123442403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265430300 + ... + 265430307.

It is an arithmetic number, because the mean of its divisors is an integer number (619337376).

Almost surely, 2^2123442428 is an apocalyptic number.

It is an amenable number.

2123442428 is a deficient number, since it is larger than the sum of its proper divisors (1592581828).

2123442428 is a wasteful number, since it uses less digits than its factorization.

2123442428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530860611 (or 530860609 counting only the distinct ones).

The product of its digits is 24576, while the sum is 32.

The square root of 2123442428 is about 46080.8249492129. The cubic root of 2123442428 is about 1285.3266043394.

The spelling of 2123442428 in words is "two billion, one hundred twenty-three million, four hundred forty-two thousand, four hundred twenty-eight".