11423142 has 48 divisors (see below), whose sum is σ = 26357760. Its totient is φ = 3565296.

The previous prime is 11423131. The next prime is 11423149. The reversal of 11423142 is 24132411.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11423149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43303 + ... + 43565.

It is an arithmetic number, because the mean of its divisors is an integer number (549120).

Almost surely, 2^11423142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11423142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13178880).

11423142 is an abundant number, since it is smaller than the sum of its proper divisors (14934618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11423142 is a wasteful number, since it uses less digits than its factorization.

11423142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417 (or 414 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 11423142 is about 3379.8139002022. The cubic root of 11423142 is about 225.2139002911.

Adding to 11423142 its reverse (24132411), we get a palindrome (35555553).

It can be divided in two parts, 1142314 and 2, that added together give a triangular number (1142316 = T₁₅₁₁).

The spelling of 11423142 in words is "eleven million, four hundred twenty-three thousand, one hundred forty-two".