1002422440 has 16 divisors (see below), whose sum is σ = 2255450580. Its totient is φ = 400968960.

The previous prime is 1002422437. The next prime is 1002422461. The reversal of 1002422440 is 442242001.

It can be written as a sum of positive squares in 2 ways, for example, as 947039076 + 55383364 = 30774^2 + 7442^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12530241 + ... + 12530320.

Almost surely, 2^1002422440 is an apocalyptic number.

1002422440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002422440 is an abundant number, since it is smaller than the sum of its proper divisors (1253028140).

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

1002422440 is a wasteful number, since it uses less digits than its factorization.

1002422440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25060572 (or 25060568 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1002422440 is about 31661.0555730538. The cubic root of 1002422440 is about 1000.8068288521.

Adding to 1002422440 its reverse (442242001), we get a palindrome (1444664441).

The spelling of 1002422440 in words is "one billion, two million, four hundred twenty-two thousand, four hundred forty".