1002421245 has 16 divisors (see below), whose sum is σ = 1832999040. Its totient is φ = 458249664.

The previous prime is 1002421243. The next prime is 1002421271. The reversal of 1002421245 is 5421242001.

It is not a de Polignac number, because 1002421245 - 2¹ = 1002421243 is a prime.

It is a super-3 number, since 3×1002421245³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002421243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4773330 + ... + 4773539.

It is an arithmetic number, because the mean of its divisors is an integer number (114562440).

Almost surely, 2^1002421245 is an apocalyptic number.

1002421245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1002421245 is a deficient number, since it is larger than the sum of its proper divisors (830577795).

1002421245 is an equidigital number, since it uses as much as digits as its factorization.

1002421245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9546884.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1002421245 is about 31661.0367012832. The cubic root of 1002421245 is about 1000.8064311606.

Adding to 1002421245 its reverse (5421242001), we get a palindrome (6423663246).

The spelling of 1002421245 in words is "one billion, two million, four hundred twenty-one thousand, two hundred forty-five".