111453012542 has 32 divisors (see below), whose sum is σ = 175219103232. Its totient is φ = 53068381344.

The previous prime is 111453012523. The next prime is 111453012563. The reversal of 111453012542 is 245210354111.

It is a happy number.

It is a super-3 number, since 3×111453012542³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20473673 + ... + 20479115.

It is an arithmetic number, because the mean of its divisors is an integer number (5475596976).

Almost surely, 2^111453012542 is an apocalyptic number.

111453012542 is a deficient number, since it is larger than the sum of its proper divisors (63766090690).

111453012542 is a wasteful number, since it uses less digits than its factorization.

111453012542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7352.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 111453012542 its reverse (245210354111), we get a palindrome (356663366653).

The spelling of 111453012542 in words is "one hundred eleven billion, four hundred fifty-three million, twelve thousand, five hundred forty-two".