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12542421349 is a prime number
BaseRepresentation
bin10111010111001011…
…00010100101100101
31012101002210000120001
423223211202211211
5201141324440344
65432323341301
7622545552043
oct135345424545
935332700501
1012542421349
115356962887
122520521831
13124b6505c3
1486da97393
154d61b7ed4
hex2eb962965

12542421349 has 2 divisors, whose sum is σ = 12542421350. Its totient is φ = 12542421348.

The previous prime is 12542421301. The next prime is 12542421391. The reversal of 12542421349 is 94312424521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7147518849 + 5394902500 = 84543^2 + 73450^2 .

It is a cyclic number.

It is not a de Polignac number, because 12542421349 - 215 = 12542388581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12542422349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6271210674 + 6271210675.

It is an arithmetic number, because the mean of its divisors is an integer number (6271210675).

Almost surely, 212542421349 is an apocalyptic number.

It is an amenable number.

12542421349 is a deficient number, since it is larger than the sum of its proper divisors (1).

12542421349 is an equidigital number, since it uses as much as digits as its factorization.

12542421349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 37.

The spelling of 12542421349 in words is "twelve billion, five hundred forty-two million, four hundred twenty-one thousand, three hundred forty-nine".