111720342 has 64 divisors (see below), whose sum is σ = 245975040. Its totient is φ = 33696000.

The previous prime is 111720319. The next prime is 111720397. The reversal of 111720342 is 243027111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 356778 + ... + 357090.

It is an arithmetic number, because the mean of its divisors is an integer number (3843360).

Almost surely, 2^111720342 is an apocalyptic number.

111720342 is an abundant number, since it is smaller than the sum of its proper divisors (134254698).

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

111720342 is a wasteful number, since it uses less digits than its factorization.

111720342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 111720342 is about 10569.7843875833. The cubic root of 111720342 is about 481.6269187050.

Adding to 111720342 its reverse (243027111), we get a palindrome (354747453).

The spelling of 111720342 in words is "one hundred eleven million, seven hundred twenty thousand, three hundred forty-two".