1442987071 has 4 divisors (see below), whose sum is σ = 1443178944. Its totient is φ = 1442795200.

The previous prime is 1442987069. The next prime is 1442987083. The reversal of 1442987071 is 1707892441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1707892441 = 389 ⋅4390469.

It is a cyclic number.

It is not a de Polignac number, because 1442987071 - 2¹ = 1442987069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442987971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84175 + ... + 99856.

It is an arithmetic number, because the mean of its divisors is an integer number (360794736).

Almost surely, 2^1442987071 is an apocalyptic number.

1442987071 is a deficient number, since it is larger than the sum of its proper divisors (191873).

1442987071 is an equidigital number, since it uses as much as digits as its factorization.

1442987071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191872.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 1442987071 is about 37986.6696487070. The cubic root of 1442987071 is about 1130.0235124457.

The spelling of 1442987071 in words is "one billion, four hundred forty-two million, nine hundred eighty-seven thousand, seventy-one".