2042402251 has 2 divisors, whose sum is σ = 2042402252. Its totient is φ = 2042402250.

The previous prime is 2042402239. The next prime is 2042402281. The reversal of 2042402251 is 1522042402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2042402251 - 2²³ = 2034013643 is a prime.

It is not a weakly prime, because it can be changed into another prime (2042402281) 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 as a sum of consecutive naturals, namely, 1021201125 + 1021201126.

It is an arithmetic number, because the mean of its divisors is an integer number (1021201126).

Almost surely, 2^2042402251 is an apocalyptic number.

2042402251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042402251 is an equidigital number, since it uses as much as digits as its factorization.

2042402251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 2042402251 is about 45192.9447037920. The cubic root of 2042402251 is about 1268.7627711560.

Adding to 2042402251 its reverse (1522042402), we get a palindrome (3564444653).

The spelling of 2042402251 in words is "two billion, forty-two million, four hundred two thousand, two hundred fifty-one".