2120421544 has 32 divisors (see below), whose sum is σ = 4091472000. Its totient is φ = 1029708160.

The previous prime is 2120421521. The next prime is 2120421553. The reversal of 2120421544 is 4451240212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27732 + ... + 70780.

It is an arithmetic number, because the mean of its divisors is an integer number (127858500).

Almost surely, 2^2120421544 is an apocalyptic number.

It is an amenable number.

2120421544 is a deficient number, since it is larger than the sum of its proper divisors (1971050456).

2120421544 is a wasteful number, since it uses less digits than its factorization.

2120421544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43233 (or 43229 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 2120421544 is about 46048.0351806676. The cubic root of 2120421544 is about 1284.7167981022.

Adding to 2120421544 its reverse (4451240212), we get a palindrome (6571661756).

The spelling of 2120421544 in words is "two billion, one hundred twenty million, four hundred twenty-one thousand, five hundred forty-four".