4540437121 has 4 divisors (see below), whose sum is σ = 4953204144. Its totient is φ = 4127670100.

The previous prime is 4540437101. The next prime is 4540437131. The reversal of 4540437121 is 1217340454.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4540437121 - 2¹⁹ = 4539912833 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4540437101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206383495 + ... + 206383516.

It is an arithmetic number, because the mean of its divisors is an integer number (1238301036).

Almost surely, 2^4540437121 is an apocalyptic number.

It is an amenable number.

4540437121 is a deficient number, since it is larger than the sum of its proper divisors (412767023).

4540437121 is a wasteful number, since it uses less digits than its factorization.

4540437121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412767022.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 4540437121 is about 67382.7657565345. The cubic root of 4540437121 is about 1655.8940865588.

Adding to 4540437121 its reverse (1217340454), we get a palindrome (5757777575).

It can be divided in two parts, 454043 and 7121, that added together give a palindrome (461164).

The spelling of 4540437121 in words is "four billion, five hundred forty million, four hundred thirty-seven thousand, one hundred twenty-one".