1250421000 has 128 divisors (see below), whose sum is σ = 3960178560. Its totient is φ = 328416000.

The previous prime is 1250420959. The next prime is 1250421001. The reversal of 1250421000 is 1240521.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1250421001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 197890 + ... + 204110.

It is an arithmetic number, because the mean of its divisors is an integer number (30938895).

Almost surely, 2^1250421000 is an apocalyptic number.

1250421000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1250421000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1980089280).

1250421000 is an abundant number, since it is smaller than the sum of its proper divisors (2709757560).

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

1250421000 is a wasteful number, since it uses less digits than its factorization.

1250421000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6312 (or 6298 counting only the distinct ones).

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

The square root of 1250421000 is about 35361.2923971961. The cubic root of 1250421000 is about 1077.3382670420.

Adding to 1250421000 its reverse (1240521), we get a palindrome (1251661521).

The spelling of 1250421000 in words is "one billion, two hundred fifty million, four hundred twenty-one thousand".