113521142249 has 2 divisors, whose sum is σ = 113521142250. Its totient is φ = 113521142248.

The previous prime is 113521142243. The next prime is 113521142347. The reversal of 113521142249 is 942241125311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78913237225 + 34607905024 = 280915^2 + 186032^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113521142249 is a prime.

It is not a weakly prime, because it can be changed into another prime (113521142243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56760571124 + 56760571125.

It is an arithmetic number, because the mean of its divisors is an integer number (56760571125).

Almost surely, 2^113521142249 is an apocalyptic number.

It is an amenable number.

113521142249 is a deficient number, since it is larger than the sum of its proper divisors (1).

113521142249 is an equidigital number, since it uses as much as digits as its factorization.

113521142249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The spelling of 113521142249 in words is "one hundred thirteen billion, five hundred twenty-one million, one hundred forty-two thousand, two hundred forty-nine".