542421435251 has 2 divisors, whose sum is σ = 542421435252. Its totient is φ = 542421435250.

The previous prime is 542421435167. The next prime is 542421435253. The reversal of 542421435251 is 152534124245.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 542421435251 - 2²⁶ = 542354326387 is a prime.

Together with 542421435253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (542421435253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271210717625 + 271210717626.

It is an arithmetic number, because the mean of its divisors is an integer number (271210717626).

Almost surely, 2^542421435251 is an apocalyptic number.

542421435251 is a deficient number, since it is larger than the sum of its proper divisors (1).

542421435251 is an equidigital number, since it uses as much as digits as its factorization.

542421435251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192000, while the sum is 38.

Adding to 542421435251 its reverse (152534124245), we get a palindrome (694955559496).

The spelling of 542421435251 in words is "five hundred forty-two billion, four hundred twenty-one million, four hundred thirty-five thousand, two hundred fifty-one".