2542672109 has 2 divisors, whose sum is σ = 2542672110. Its totient is φ = 2542672108.

The previous prime is 2542672073. The next prime is 2542672147. The reversal of 2542672109 is 9012762452.

It is an a-pointer prime, because the next prime (2542672147) can be obtained adding 2542672109 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1687402084 + 855270025 = 41078^2 + 29245^2 .

It is a cyclic number.

It is not a de Polignac number, because 2542672109 - 2⁸ = 2542671853 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2542972109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271336054 + 1271336055.

It is an arithmetic number, because the mean of its divisors is an integer number (1271336055).

Almost surely, 2^2542672109 is an apocalyptic number.

It is an amenable number.

2542672109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2542672109 is an equidigital number, since it uses as much as digits as its factorization.

2542672109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 2542672109 is about 50424.9155576883. The cubic root of 2542672109 is about 1364.8872800245.

The spelling of 2542672109 in words is "two billion, five hundred forty-two million, six hundred seventy-two thousand, one hundred nine".