109542131 has 2 divisors, whose sum is σ = 109542132. Its totient is φ = 109542130.

The previous prime is 109542109. The next prime is 109542151. The reversal of 109542131 is 131245901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109542131 - 2¹⁸ = 109279987 is a prime.

It is a super-2 number, since 2×109542131² = 23998956928042322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109542131.

It is not a weakly prime, because it can be changed into another prime (109542151) 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, 54771065 + 54771066.

It is an arithmetic number, because the mean of its divisors is an integer number (54771066).

Almost surely, 2^109542131 is an apocalyptic number.

109542131 is a deficient number, since it is larger than the sum of its proper divisors (1).

109542131 is an equidigital number, since it uses as much as digits as its factorization.

109542131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 109542131 is about 10466.2376716755. The cubic root of 109542131 is about 478.4762603748.

The spelling of 109542131 in words is "one hundred nine million, five hundred forty-two thousand, one hundred thirty-one".