2121044542 has 16 divisors (see below), whose sum is σ = 3423946032. Its totient is φ = 981774720.

The previous prime is 2121044503. The next prime is 2121044551. The reversal of 2121044542 is 2454401212.

It is a congruent number.

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, 509268 + ... + 513415.

It is an arithmetic number, because the mean of its divisors is an integer number (213996627).

Almost surely, 2^2121044542 is an apocalyptic number.

2121044542 is a deficient number, since it is larger than the sum of its proper divisors (1302901490).

2121044542 is a wasteful number, since it uses less digits than its factorization.

2121044542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022763.

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

The square root of 2121044542 is about 46054.7993373112. The cubic root of 2121044542 is about 1284.8426060459.

Adding to 2121044542 its reverse (2454401212), we get a palindrome (4575445754).

The spelling of 2121044542 in words is "two billion, one hundred twenty-one million, forty-four thousand, five hundred forty-two".