5142523121 has 2 divisors, whose sum is σ = 5142523122. Its totient is φ = 5142523120.

The previous prime is 5142523117. The next prime is 5142523129. The reversal of 5142523121 is 1213252415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4808035600 + 334487521 = 69340^2 + 18289^2 .

It is a cyclic number.

It is not a de Polignac number, because 5142523121 - 2² = 5142523117 is a prime.

It is not a weakly prime, because it can be changed into another prime (5142523129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2571261560 + 2571261561.

It is an arithmetic number, because the mean of its divisors is an integer number (2571261561).

Almost surely, 2^5142523121 is an apocalyptic number.

It is an amenable number.

5142523121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5142523121 is an equidigital number, since it uses as much as digits as its factorization.

5142523121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 26.

The square root of 5142523121 is about 71711.3876661162. The cubic root of 5142523121 is about 1726.0713776821.

Adding to 5142523121 its reverse (1213252415), we get a palindrome (6355775536).

The spelling of 5142523121 in words is "five billion, one hundred forty-two million, five hundred twenty-three thousand, one hundred twenty-one".