111142403 has 4 divisors (see below), whose sum is σ = 111457608. Its totient is φ = 110827200.

The previous prime is 111142397. The next prime is 111142411. The reversal of 111142403 is 304241111.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 111142403 - 2¹⁰ = 111141379 is a prime.

It is a super-2 number, since 2×111142403² = 24705267489228818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111142433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157073 + ... + 157778.

It is an arithmetic number, because the mean of its divisors is an integer number (27864402).

Almost surely, 2^111142403 is an apocalyptic number.

111142403 is a deficient number, since it is larger than the sum of its proper divisors (315205).

111142403 is an equidigital number, since it uses as much as digits as its factorization.

111142403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315204.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 111142403 is about 10542.4097340219. The cubic root of 111142403 is about 480.7949832464.

Adding to 111142403 its reverse (304241111), we get a palindrome (415383514).

The spelling of 111142403 in words is "one hundred eleven million, one hundred forty-two thousand, four hundred three".