1142445444 has 24 divisors (see below), whose sum is σ = 3046521408. Its totient is φ = 326412960.

The previous prime is 1142445439. The next prime is 1142445467. The reversal of 1142445444 is 4445442411.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6800187 + ... + 6800354.

It is an arithmetic number, because the mean of its divisors is an integer number (126938392).

Almost surely, 2^1142445444 is an apocalyptic number.

1142445444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1142445444 is an abundant number, since it is smaller than the sum of its proper divisors (1904075964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1142445444 is a wasteful number, since it uses less digits than its factorization.

1142445444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13600555 (or 13600553 counting only the distinct ones).

The product of its digits is 40960, while the sum is 33.

The square root of 1142445444 is about 33800.0805324484. The cubic root of 1142445444 is about 1045.3903577396.

Adding to 1142445444 its reverse (4445442411), we get a palindrome (5587887855).

The spelling of 1142445444 in words is "one billion, one hundred forty-two million, four hundred forty-five thousand, four hundred forty-four".