1442421520 has 40 divisors (see below), whose sum is σ = 3355224984. Its totient is φ = 576694272.

The previous prime is 1442421509. The next prime is 1442421523. The reversal of 1442421520 is 251242441.

It can be written as a sum of positive squares in 4 ways, for example, as 1763584 + 1440657936 = 1328^2 + 37956^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1442421520² = 4161159682718220800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1442421523) 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, 293322 + ... + 298198.

Almost surely, 2^1442421520 is an apocalyptic number.

1442421520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442421520 is an abundant number, since it is smaller than the sum of its proper divisors (1912803464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1442421520 is a wasteful number, since it uses less digits than its factorization.

1442421520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8587 (or 8581 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 1442421520 is about 37979.2248472767. The cubic root of 1442421520 is about 1129.8758628350.

Adding to 1442421520 its reverse (251242441), we get a palindrome (1693663961).

The spelling of 1442421520 in words is "one billion, four hundred forty-two million, four hundred twenty-one thousand, five hundred twenty".