111545420 has 48 divisors (see below), whose sum is σ = 274252608. Its totient is φ = 37309440.

The previous prime is 111545411. The next prime is 111545503. The reversal of 111545420 is 24545111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3977 + ... + 15456.

It is an arithmetic number, because the mean of its divisors is an integer number (5713596).

Almost surely, 2^111545420 is an apocalyptic number.

111545420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111545420 is an abundant number, since it is smaller than the sum of its proper divisors (162707188).

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

111545420 is a wasteful number, since it uses less digits than its factorization.

111545420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19490 (or 19488 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 111545420 is about 10561.5065213254. The cubic root of 111545420 is about 481.3754242156.

The spelling of 111545420 in words is "one hundred eleven million, five hundred forty-five thousand, four hundred twenty".