1002426444 has 36 divisors (see below), whose sum is σ = 2543794344. Its totient is φ = 332838912.

The previous prime is 1002426443. The next prime is 1002426479. The reversal of 1002426444 is 4446242001.

It is a happy number.

1002426444 is a `hidden beast` number, since 10 + 0 + 2 + 4 + 2 + 644 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1002426443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44922 + ... + 63425.

It is an arithmetic number, because the mean of its divisors is an integer number (70660954).

Almost surely, 2^1002426444 is an apocalyptic number.

It is an amenable number.

1002426444 is an abundant number, since it is smaller than the sum of its proper divisors (1541367900).

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

1002426444 is a wasteful number, since it uses less digits than its factorization.

1002426444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108614 (or 108609 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 1002426444 is about 31661.1188052475. The cubic root of 1002426444 is about 1000.8081613659.

Adding to 1002426444 its reverse (4446242001), we get a palindrome (5448668445).

The spelling of 1002426444 in words is "one billion, two million, four hundred twenty-six thousand, four hundred forty-four".