1430021140 has 48 divisors (see below), whose sum is σ = 3112678800. Its totient is φ = 551411712.

The previous prime is 1430021129. The next prime is 1430021141. The reversal of 1430021140 is 411200341.

It can be written as a sum of positive squares in 8 ways, for example, as 163942416 + 1266078724 = 12804^2 + 35582^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1430021141) 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 15 ways as a sum of consecutive naturals, for example, 71796 + ... + 89524.

It is an arithmetic number, because the mean of its divisors is an integer number (64847475).

Almost surely, 2^1430021140 is an apocalyptic number.

1430021140 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 1430021140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1556339400).

1430021140 is an abundant number, since it is smaller than the sum of its proper divisors (1682657660).

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

1430021140 is a wasteful number, since it uses less digits than its factorization.

1430021140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17884 (or 17882 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1430021140 is about 37815.6203175355. The cubic root of 1430021140 is about 1126.6287230121.

Adding to 1430021140 its reverse (411200341), we get a palindrome (1841221481).

The spelling of 1430021140 in words is "one billion, four hundred thirty million, twenty-one thousand, one hundred forty".