111542340 has 192 divisors, whose sum is σ = 397393920. Its totient is φ = 22740480.

The previous prime is 111542339. The next prime is 111542351. The reversal of 111542340 is 43245111.

111542340 = T₁₅₂₀ + T₁₅₂₁ + ... + T₁₆₁₀.

It is a super-2 number, since 2×111542340² = 24883387225351200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 168931 + ... + 169589.

It is an arithmetic number, because the mean of its divisors is an integer number (2069760).

Almost surely, 2^111542340 is an apocalyptic number.

111542340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111542340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198696960).

111542340 is an abundant number, since it is smaller than the sum of its proper divisors (285851580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111542340 is a wasteful number, since it uses less digits than its factorization.

111542340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 111542340 is about 10561.3607077876. The cubic root of 111542340 is about 481.3709935841.

Adding to 111542340 its reverse (43245111), we get a palindrome (154787451).

The spelling of 111542340 in words is "one hundred eleven million, five hundred forty-two thousand, three hundred forty".