1442343771 has 48 divisors (see below), whose sum is σ = 2321250048. Its totient is φ = 855691200.

The previous prime is 1442343769. The next prime is 1442343781. The reversal of 1442343771 is 1773432441.

It is not a de Polignac number, because 1442343771 - 2¹ = 1442343769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1442343781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1102900 + ... + 1104206.

It is an arithmetic number, because the mean of its divisors is an integer number (48359376).

Almost surely, 2^1442343771 is an apocalyptic number.

1442343771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1442343771 is a deficient number, since it is larger than the sum of its proper divisors (878906277).

1442343771 is a wasteful number, since it uses less digits than its factorization.

1442343771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552 (or 1549 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 1442343771 is about 37978.2012607232. The cubic root of 1442343771 is about 1129.8555617196.

The spelling of 1442343771 in words is "one billion, four hundred forty-two million, three hundred forty-three thousand, seven hundred seventy-one".