2120042501 has 2 divisors, whose sum is σ = 2120042502. Its totient is φ = 2120042500.

The previous prime is 2120042471. The next prime is 2120042521. The reversal of 2120042501 is 1052400212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2107269025 + 12773476 = 45905^2 + 3574^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120042501 - 2⁶ = 2120042437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2120042501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120042521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060021250 + 1060021251.

It is an arithmetic number, because the mean of its divisors is an integer number (1060021251).

Almost surely, 2^2120042501 is an apocalyptic number.

It is an amenable number.

2120042501 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120042501 is an equidigital number, since it uses as much as digits as its factorization.

2120042501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 2120042501 is about 46043.9192619395. The cubic root of 2120042501 is about 1284.6402422668.

Adding to 2120042501 its reverse (1052400212), we get a palindrome (3172442713).

The spelling of 2120042501 in words is "two billion, one hundred twenty million, forty-two thousand, five hundred one".