111742402021597 has 4 divisors (see below), whose sum is σ = 111991271514300. Its totient is φ = 111493532528896.

The previous prime is 111742402021583. The next prime is 111742402021717. The reversal of 111742402021597 is 795120204247111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92696631712281 + 19045770309316 = 9627909^2 + 4364146^2 .

It is a cyclic number.

It is not a de Polignac number, because 111742402021597 - 2⁷ = 111742402021469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111742402021517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124434745678 + ... + 124434746575.

It is an arithmetic number, because the mean of its divisors is an integer number (27997817878575).

Almost surely, 2^{111742402021597} is an apocalyptic number.

It is an amenable number.

111742402021597 is a deficient number, since it is larger than the sum of its proper divisors (248869492703).

111742402021597 is an equidigital number, since it uses as much as digits as its factorization.

111742402021597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248869492702.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 111742402021597 in words is "one hundred eleven trillion, seven hundred forty-two billion, four hundred two million, twenty-one thousand, five hundred ninety-seven".