11423140 has 12 divisors (see below), whose sum is σ = 23988636. Its totient is φ = 4569248.

The previous prime is 11423131. The next prime is 11423149. The reversal of 11423140 is 4132411.

11423140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11423131) and next prime (11423149).

It can be written as a sum of positive squares in 2 ways, for example, as 7518564 + 3904576 = 2742^2 + 1976^2 .

It is not an unprimeable number, because it can be changed into a prime (11423149) 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, 285559 + ... + 285598.

It is an arithmetic number, because the mean of its divisors is an integer number (1999053).

Almost surely, 2^11423140 is an apocalyptic number.

11423140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11423140 is an abundant number, since it is smaller than the sum of its proper divisors (12565496).

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

11423140 is a wasteful number, since it uses less digits than its factorization.

11423140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571166 (or 571164 counting only the distinct ones).

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

The square root of 11423140 is about 3379.8136043279. The cubic root of 11423140 is about 225.2138871474.

Adding to 11423140 its reverse (4132411), we get a palindrome (15555551).

The spelling of 11423140 in words is "eleven million, four hundred twenty-three thousand, one hundred forty".