111442401 has 12 divisors (see below), whose sum is σ = 183968512. Its totient is φ = 63681336.

The previous prime is 111442399. The next prime is 111442403. The reversal of 111442401 is 104244111.

It is an interprime number because it is at equal distance from previous prime (111442399) and next prime (111442403).

It is not a de Polignac number, because 111442401 - 2¹ = 111442399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111442403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 884401 + ... + 884526.

Almost surely, 2^111442401 is an apocalyptic number.

It is an amenable number.

111442401 is a deficient number, since it is larger than the sum of its proper divisors (72526111).

111442401 is a wasteful number, since it uses less digits than its factorization.

111442401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768940 (or 1768937 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 111442401 is about 10556.6282969516. The cubic root of 111442401 is about 481.2271853805.

Adding to 111442401 its reverse (104244111), we get a palindrome (215686512).

The spelling of 111442401 in words is "one hundred eleven million, four hundred forty-two thousand, four hundred one".