1002421047 has 32 divisors (see below), whose sum is σ = 1404345600. Its totient is φ = 635199488.

The previous prime is 1002421009. The next prime is 1002421051. The reversal of 1002421047 is 7401242001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1002421047 - 2²³ = 994032439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002421067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2392204 + ... + 2392622.

It is an arithmetic number, because the mean of its divisors is an integer number (43885800).

Almost surely, 2^1002421047 is an apocalyptic number.

1002421047 is a deficient number, since it is larger than the sum of its proper divisors (401924553).

1002421047 is a wasteful number, since it uses less digits than its factorization.

1002421047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 1002421047 is about 31661.0335744113. The cubic root of 1002421047 is about 1000.8063652669.

Adding to 1002421047 its reverse (7401242001), we get a palindrome (8403663048).

The spelling of 1002421047 in words is "one billion, two million, four hundred twenty-one thousand, forty-seven".