1142425 has 6 divisors (see below), whose sum is σ = 1416638. Its totient is φ = 913920.

The previous prime is 1142423. The next prime is 1142431. The reversal of 1142425 is 5242411.

It can be written as a sum of positive squares in 3 ways, for example, as 35721 + 1106704 = 189^2 + 1052^2 .

It is not a de Polignac number, because 1142425 - 2¹ = 1142423 is a prime.

It is a Duffinian number.

1142425 is a lucky number.

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 5 ways as a sum of consecutive naturals, for example, 22824 + ... + 22873.

2^1142425 is an apocalyptic number.

It is an amenable number.

1142425 is a deficient number, since it is larger than the sum of its proper divisors (274213).

1142425 is an equidigital number, since it uses as much as digits as its factorization.

1142425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45707 (or 45702 counting only the distinct ones).

The product of its digits is 320, while the sum is 19.

The square root of 1142425 is about 1068.8428322256. The cubic root of 1142425 is about 104.5384121968.

Adding to 1142425 its reverse (5242411), we get a palindrome (6384836).

It can be divided in two parts, 11424 and 25, that added together give a square (11449 = 107²).

The spelling of 1142425 in words is "one million, one hundred forty-two thousand, four hundred twenty-five".