11390042 has 16 divisors (see below), whose sum is σ = 17577000. Its totient is φ = 5533440.

The previous prime is 11390039. The next prime is 11390047. The reversal of 11390042 is 24009311.

It can be written as a sum of positive squares in 4 ways, for example, as 7513081 + 3876961 = 2741^2 + 1969^2 .

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 11389996 and 11390023.

It is not an unprimeable number, because it can be changed into a prime (11390047) 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 7 ways as a sum of consecutive naturals, for example, 10334 + ... + 11382.

Almost surely, 2^11390042 is an apocalyptic number.

11390042 is a deficient number, since it is larger than the sum of its proper divisors (6186958).

11390042 is a wasteful number, since it uses less digits than its factorization.

11390042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 11390042 is about 3374.9136285244. The cubic root of 11390042 is about 224.9961612514.

Adding to 11390042 its reverse (24009311), we get a palindrome (35399353).

The spelling of 11390042 in words is "eleven million, three hundred ninety thousand, forty-two".