1142421425 has 12 divisors (see below), whose sum is σ = 1440614640. Its totient is φ = 898445520.

The previous prime is 1142421421. The next prime is 1142421439. The reversal of 1142421425 is 5241242411.

It is not a de Polignac number, because 1142421425 - 2² = 1142421421 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1142421394 and 1142421403.

It is not an unprimeable number, because it can be changed into a prime (1142421421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 385787 + ... + 388736.

It is an arithmetic number, because the mean of its divisors is an integer number (120051220).

Almost surely, 2^1142421425 is an apocalyptic number.

It is an amenable number.

1142421425 is a deficient number, since it is larger than the sum of its proper divisors (298193215).

1142421425 is an equidigital number, since it uses as much as digits as its factorization.

1142421425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774592 (or 774587 counting only the distinct ones).

The product of its digits is 2560, while the sum is 26.

The square root of 1142421425 is about 33799.7252207766. The cubic root of 1142421425 is about 1045.3830315234.

Adding to 1142421425 its reverse (5241242411), we get a palindrome (6383663836).

The spelling of 1142421425 in words is "one billion, one hundred forty-two million, four hundred twenty-one thousand, four hundred twenty-five".