11142890 has 24 divisors (see below), whose sum is σ = 22048740. Its totient is φ = 4051520.

The previous prime is 11142881. The next prime is 11142893. The reversal of 11142890 is 9824111.

It can be written as a sum of positive squares in 2 ways, for example, as 10387729 + 755161 = 3223^2 + 869^2 .

It is not an unprimeable number, because it can be changed into a prime (11142893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3395 + ... + 5814.

Almost surely, 2^11142890 is an apocalyptic number.

11142890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11142890 is a deficient number, since it is larger than the sum of its proper divisors (10905850).

11142890 is a wasteful number, since it uses less digits than its factorization.

11142890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9238 (or 9227 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 11142890 is about 3338.0967631272. The cubic root of 11142890 is about 223.3568525514.

It can be divided in two parts, 1114 and 2890, that added together give a palindrome (4004).

The spelling of 11142890 in words is "eleven million, one hundred forty-two thousand, eight hundred ninety".