1001245404 has 12 divisors (see below), whose sum is σ = 2336239304. Its totient is φ = 333748464.

The previous prime is 1001245403. The next prime is 1001245477. The reversal of 1001245404 is 4045421001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1001245404² = 2004984718062246432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001245403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41718547 + ... + 41718570.

Almost surely, 2^1001245404 is an apocalyptic number.

It is an amenable number.

1001245404 is an abundant number, since it is smaller than the sum of its proper divisors (1334993900).

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

1001245404 is a wasteful number, since it uses less digits than its factorization.

1001245404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83437124 (or 83437122 counting only the distinct ones).

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

The square root of 1001245404 is about 31642.4620407452. The cubic root of 1001245404 is about 1000.4149624490.

Adding to 1001245404 its reverse (4045421001), we get a palindrome (5046666405).

The spelling of 1001245404 in words is "one billion, one million, two hundred forty-five thousand, four hundred four".