1442387 has 4 divisors (see below), whose sum is σ = 1451400. Its totient is φ = 1433376.

The previous prime is 1442377. The next prime is 1442393. The reversal of 1442387 is 7832441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7832441 = 199 ⋅39359.

It is a cyclic number.

It is not a de Polignac number, because 1442387 - 2¹² = 1438291 is a prime.

It is a d-powerful number, because it can be written as 1 + 4⁹ + 4¹⁰ + 2¹⁷ + 3⁵ + 8 + 7³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1442317) 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, 4262 + ... + 4587.

It is an arithmetic number, because the mean of its divisors is an integer number (362850).

2^1442387 is an apocalyptic number.

1442387 is a deficient number, since it is larger than the sum of its proper divisors (9013).

1442387 is an equidigital number, since it uses as much as digits as its factorization.

1442387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9012.

The product of its digits is 5376, while the sum is 29.

The square root of 1442387 is about 1200.9941715096. The cubic root of 1442387 is about 112.9866849375.

The spelling of 1442387 in words is "one million, four hundred forty-two thousand, three hundred eighty-seven".