4120542001 has 4 divisors (see below), whose sum is σ = 4120672500. Its totient is φ = 4120411504.

The previous prime is 4120541987. The next prime is 4120542007. The reversal of 4120542001 is 1002450214.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1002450214 = 2 ⋅501225107.

It can be written as a sum of positive squares in 2 ways, for example, as 1035294976 + 3085247025 = 32176^2 + 55545^2 .

It is a cyclic number.

It is not a de Polignac number, because 4120542001 - 2⁹ = 4120541489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4120542001.

It is not an unprimeable number, because it can be changed into a prime (4120542007) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15075 + ... + 92023.

It is an arithmetic number, because the mean of its divisors is an integer number (1030168125).

Almost surely, 2^4120542001 is an apocalyptic number.

It is an amenable number.

4120542001 is a deficient number, since it is larger than the sum of its proper divisors (130499).

4120542001 is an equidigital number, since it uses as much as digits as its factorization.

4120542001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130498.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 4120542001 is about 64191.4480363233. The cubic root of 4120542001 is about 1603.1892119029.

Adding to 4120542001 its reverse (1002450214), we get a palindrome (5122992215).

It can be divided in two parts, 4120 and 542001, that added together give a square (546121 = 739²).

The spelling of 4120542001 in words is "four billion, one hundred twenty million, five hundred forty-two thousand, one".