1000401252 has 24 divisors (see below), whose sum is σ = 2341881696. Its totient is φ = 332379648.

The previous prime is 1000401229. The next prime is 1000401257. The reversal of 1000401252 is 2521040001.

1000401252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1000401257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132093 + ... + 139460.

It is an arithmetic number, because the mean of its divisors is an integer number (97578404).

Almost surely, 2^1000401252 is an apocalyptic number.

1000401252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1000401252 is an abundant number, since it is smaller than the sum of its proper divisors (1341480444).

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

1000401252 is a wasteful number, since it uses less digits than its factorization.

1000401252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271867 (or 271865 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1000401252 is about 31629.1203165690. The cubic root of 1000401252 is about 1000.1337327814.

Adding to 1000401252 its reverse (2521040001), we get a palindrome (3521441253).

The spelling of 1000401252 in words is "one billion, four hundred one thousand, two hundred fifty-two".