1142440773 has 8 divisors (see below), whose sum is σ = 1528153536. Its totient is φ = 759177600.

The previous prime is 1142440771. The next prime is 1142440787. The reversal of 1142440773 is 3770442411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1142440773 - 2¹ = 1142440771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142440771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 611308 + ... + 613173.

It is an arithmetic number, because the mean of its divisors is an integer number (191019192).

Almost surely, 2^1142440773 is an apocalyptic number.

It is an amenable number.

1142440773 is a deficient number, since it is larger than the sum of its proper divisors (385712763).

1142440773 is a wasteful number, since it uses less digits than its factorization.

1142440773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224795.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 1142440773 is about 33800.0114349093. The cubic root of 1142440773 is about 1045.3889330108.

The spelling of 1142440773 in words is "one billion, one hundred forty-two million, four hundred forty thousand, seven hundred seventy-three".