111142405 has 8 divisors (see below), whose sum is σ = 145495584. Its totient is φ = 80830800.

The previous prime is 111142397. The next prime is 111142411. The reversal of 111142405 is 504241111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111142405 - 2³ = 111142397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010331 + ... + 1010440.

It is an arithmetic number, because the mean of its divisors is an integer number (18186948).

Almost surely, 2^111142405 is an apocalyptic number.

It is an amenable number.

111142405 is a deficient number, since it is larger than the sum of its proper divisors (34353179).

111142405 is a wasteful number, since it uses less digits than its factorization.

111142405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020787.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 111142405 is about 10542.4098288769. The cubic root of 111142405 is about 480.7949861304.

Adding to 111142405 its reverse (504241111), we get a palindrome (615383516).

The spelling of 111142405 in words is "one hundred eleven million, one hundred forty-two thousand, four hundred five".