2120404342 has 48 divisors (see below), whose sum is σ = 3835565568. Its totient is φ = 876007440.

The previous prime is 2120404333. The next prime is 2120404357. The reversal of 2120404342 is 2434040212.

It is a happy number.

It is a super-2 number, since 2×2120404342² = 8992229147144905928, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 305167 + ... + 312037.

It is an arithmetic number, because the mean of its divisors is an integer number (79907616).

Almost surely, 2^2120404342 is an apocalyptic number.

2120404342 is a deficient number, since it is larger than the sum of its proper divisors (1715161226).

2120404342 is a wasteful number, since it uses less digits than its factorization.

2120404342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7001 (or 6994 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 2120404342 is about 46047.8483970750. The cubic root of 2120404342 is about 1284.7133239883.

Adding to 2120404342 its reverse (2434040212), we get a palindrome (4554444554).

The spelling of 2120404342 in words is "two billion, one hundred twenty million, four hundred four thousand, three hundred forty-two".