1442421511 has 4 divisors (see below), whose sum is σ = 1443260392. Its totient is φ = 1441582632.

The previous prime is 1442421509. The next prime is 1442421523. The reversal of 1442421511 is 1151242441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1442421511 - 2¹ = 1442421509 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 (1442421551) 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, 416856 + ... + 420301.

It is an arithmetic number, because the mean of its divisors is an integer number (360815098).

Almost surely, 2^1442421511 is an apocalyptic number.

1442421511 is a deficient number, since it is larger than the sum of its proper divisors (838881).

1442421511 is an equidigital number, since it uses as much as digits as its factorization.

1442421511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838880.

The product of its digits is 1280, while the sum is 25.

The square root of 1442421511 is about 37979.2247287909. The cubic root of 1442421511 is about 1129.8758604850.

Adding to 1442421511 its reverse (1151242441), we get a palindrome (2593663952).

The spelling of 1442421511 in words is "one billion, four hundred forty-two million, four hundred twenty-one thousand, five hundred eleven".