1142381225 has 12 divisors (see below), whose sum is σ = 1416974784. Its totient is φ = 913632720.

The previous prime is 1142381189. The next prime is 1142381243. The reversal of 1142381225 is 5221832411.

It is a happy number.

It is not a de Polignac number, because 1142381225 - 2¹⁴ = 1142364841 is a prime.

It is a Duffinian number.

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, 146372 + ... + 153978.

It is an arithmetic number, because the mean of its divisors is an integer number (118081232).

Almost surely, 2^1142381225 is an apocalyptic number.

It is an amenable number.

1142381225 is a deficient number, since it is larger than the sum of its proper divisors (274593559).

1142381225 is an equidigital number, since it uses as much as digits as its factorization.

1142381225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13624 (or 13619 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 1142381225 is about 33799.1305361543. The cubic root of 1142381225 is about 1045.3707695887.

The spelling of 1142381225 in words is "one billion, one hundred forty-two million, three hundred eighty-one thousand, two hundred twenty-five".