42495151121 has 2 divisors, whose sum is σ = 42495151122. Its totient is φ = 42495151120.

The previous prime is 42495151093. The next prime is 42495151123. The reversal of 42495151121 is 12115159424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21632526400 + 20862624721 = 147080^2 + 144439^2 .

It is a cyclic number.

It is not a de Polignac number, because 42495151121 - 2⁶ = 42495151057 is a prime.

Together with 42495151123, 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 (42495151123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21247575560 + 21247575561.

It is an arithmetic number, because the mean of its divisors is an integer number (21247575561).

Almost surely, 2^42495151121 is an apocalyptic number.

It is an amenable number.

42495151121 is a deficient number, since it is larger than the sum of its proper divisors (1).

42495151121 is an equidigital number, since it uses as much as digits as its factorization.

42495151121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 35.

The spelling of 42495151121 in words is "forty-two billion, four hundred ninety-five million, one hundred fifty-one thousand, one hundred twenty-one".