111121942 has 4 divisors (see below), whose sum is σ = 166682916. Its totient is φ = 55560970.

The previous prime is 111121919. The next prime is 111121943. The reversal of 111121942 is 249121111.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27780484 + ... + 27780487.

It is an arithmetic number, because the mean of its divisors is an integer number (41670729).

Almost surely, 2^111121942 is an apocalyptic number.

111121942 is a deficient number, since it is larger than the sum of its proper divisors (55560974).

111121942 is an equidigital number, since it uses as much as digits as its factorization.

111121942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55560973.

The product of its digits is 144, while the sum is 22.

The square root of 111121942 is about 10541.4392755449. The cubic root of 111121942 is about 480.7654771064.

The spelling of 111121942 in words is "one hundred eleven million, one hundred twenty-one thousand, nine hundred forty-two".