11420042 has 4 divisors (see below), whose sum is σ = 17130066. Its totient is φ = 5710020.

The previous prime is 11420041. The next prime is 11420051. The reversal of 11420042 is 24002411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24002411 = 1913 ⋅12547.

It can be written as a sum of positive squares in only one way, i.e., 11417641 + 2401 = 3379^2 + 49^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11419999 and 11420026.

It is not an unprimeable number, because it can be changed into a prime (11420041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2855009 + ... + 2855012.

Almost surely, 2^11420042 is an apocalyptic number.

11420042 is a deficient number, since it is larger than the sum of its proper divisors (5710024).

11420042 is an equidigital number, since it uses as much as digits as its factorization.

11420042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5710023.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 11420042 is about 3379.3552639520. The cubic root of 11420042 is about 225.1935256792.

Adding to 11420042 its reverse (24002411), we get a palindrome (35422453).

The spelling of 11420042 in words is "eleven million, four hundred twenty thousand, forty-two".