1240421000 has 256 divisors, whose sum is σ = 3667023360. Its totient is φ = 382233600.

The previous prime is 1240420999. The next prime is 1240421003. The reversal of 1240421000 is 1240421.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (1240421003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3912842 + ... + 3913158.

It is an arithmetic number, because the mean of its divisors is an integer number (14324310).

Almost surely, 2^1240421000 is an apocalyptic number.

1240421000 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 1240421000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1833511680).

1240421000 is an abundant number, since it is smaller than the sum of its proper divisors (2426602360).

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

1240421000 is a wasteful number, since it uses less digits than its factorization.

1240421000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1240421000 is about 35219.6110143198. The cubic root of 1240421000 is about 1074.4586421528.

Adding to 1240421000 its reverse (1240421), we get a palindrome (1241661421).

1240421000 divided by its reverse (1240421) gives a cube (1000 = 10³).

The spelling of 1240421000 in words is "one billion, two hundred forty million, four hundred twenty-one thousand".