1421144430 has 64 divisors (see below), whose sum is σ = 3469132800. Its totient is φ = 372528000.

The previous prime is 1421144353. The next prime is 1421144441. The reversal of 1421144430 is 344411241.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1421144430.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 593676 + ... + 596064.

It is an arithmetic number, because the mean of its divisors is an integer number (54205200).

Almost surely, 2^1421144430 is an apocalyptic number.

1421144430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1421144430 is an abundant number, since it is smaller than the sum of its proper divisors (2047988370).

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

1421144430 is a wasteful number, since it uses less digits than its factorization.

1421144430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1421144430 is about 37698.0693139582. The cubic root of 1421144430 is about 1124.2927386643.

Adding to 1421144430 its reverse (344411241), we get a palindrome (1765555671).

The spelling of 1421144430 in words is "one billion, four hundred twenty-one million, one hundred forty-four thousand, four hundred thirty".