1142423225 has 12 divisors (see below), whose sum is σ = 1478197056. Its totient is φ = 874201680.

The previous prime is 1142423213. The next prime is 1142423297. The reversal of 1142423225 is 5223242411.

It is not a de Polignac number, because 1142423225 - 2⁸ = 1142422969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142423194 and 1142423203.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 992837 + ... + 993986.

It is an arithmetic number, because the mean of its divisors is an integer number (123183088).

Almost surely, 2^1142423225 is an apocalyptic number.

It is an amenable number.

1142423225 is a deficient number, since it is larger than the sum of its proper divisors (335773831).

1142423225 is a wasteful number, since it uses less digits than its factorization.

1142423225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986856 (or 1986851 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 1142423225 is about 33799.7518482015. The cubic root of 1142423225 is about 1045.3835805585.

Adding to 1142423225 its reverse (5223242411), we get a palindrome (6365665636).

The spelling of 1142423225 in words is "one billion, one hundred forty-two million, four hundred twenty-three thousand, two hundred twenty-five".