2542313253421 has 2 divisors, whose sum is σ = 2542313253422. Its totient is φ = 2542313253420.

The previous prime is 2542313253401. The next prime is 2542313253457. The reversal of 2542313253421 is 1243523132452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2321494086025 + 220819167396 = 1523645^2 + 469914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2542313253421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2542313253401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271156626710 + 1271156626711.

It is an arithmetic number, because the mean of its divisors is an integer number (1271156626711).

Almost surely, 2^{2542313253421} is an apocalyptic number.

It is an amenable number.

2542313253421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2542313253421 is an equidigital number, since it uses as much as digits as its factorization.

2542313253421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 37.

Adding to 2542313253421 its reverse (1243523132452), we get a palindrome (3785836385873).

The spelling of 2542313253421 in words is "two trillion, five hundred forty-two billion, three hundred thirteen million, two hundred fifty-three thousand, four hundred twenty-one".