11142403 has 4 divisors (see below), whose sum is σ = 11161080. Its totient is φ = 11123728.

The previous prime is 11142401. The next prime is 11142413. The reversal of 11142403 is 30424111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30424111 = 19 ⋅1601269.

It is a cyclic number.

It is not a de Polignac number, because 11142403 - 2¹ = 11142401 is a prime.

It is a super-2 number, since 2×11142403² = 248306289228818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11142401) 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, 8413 + ... + 9646.

It is an arithmetic number, because the mean of its divisors is an integer number (2790270).

Almost surely, 2^11142403 is an apocalyptic number.

11142403 is a deficient number, since it is larger than the sum of its proper divisors (18677).

11142403 is an equidigital number, since it uses as much as digits as its factorization.

11142403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18676.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 11142403 is about 3338.0238165717. The cubic root of 11142403 is about 223.3535985670.

Adding to 11142403 its reverse (30424111), we get a palindrome (41566514).

The spelling of 11142403 in words is "eleven million, one hundred forty-two thousand, four hundred three".