1142426 has 8 divisors (see below), whose sum is σ = 1772820. Its totient is φ = 551488.

The previous prime is 1142423. The next prime is 1142431. The reversal of 1142426 is 6242411.

It can be written as a sum of positive squares in 2 ways, for example, as 1100401 + 42025 = 1049^2 + 205^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1142398 and 1142407.

It is not an unprimeable number, because it can be changed into a prime (1142423) 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 3 ways as a sum of consecutive naturals, for example, 9791 + ... + 9906.

2^1142426 is an apocalyptic number.

1142426 is a deficient number, since it is larger than the sum of its proper divisors (630394).

1142426 is a wasteful number, since it uses less digits than its factorization.

1142426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19728.

The product of its digits is 384, while the sum is 20.

The square root of 1142426 is about 1068.8433000211. The cubic root of 1142426 is about 104.5384426987.

Adding to 1142426 its reverse (6242411), we get a palindrome (7384837).

The spelling of 1142426 in words is "one million, one hundred forty-two thousand, four hundred twenty-six".