1421440430 has 16 divisors (see below), whose sum is σ = 2582506800. Its totient is φ = 563261952.

The previous prime is 1421440421. The next prime is 1421440441. The reversal of 1421440430 is 340441241.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1421440396 and 1421440405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663155 + ... + 665294.

It is an arithmetic number, because the mean of its divisors is an integer number (161406675).

Almost surely, 2^1421440430 is an apocalyptic number.

1421440430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1421440430 is a deficient number, since it is larger than the sum of its proper divisors (1161066370).

1421440430 is a wasteful number, since it uses less digits than its factorization.

1421440430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328563.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1421440430 is about 37701.9950400506. The cubic root of 1421440430 is about 1124.3707902077.

Adding to 1421440430 its reverse (340441241), we get a palindrome (1761881671).

The spelling of 1421440430 in words is "one billion, four hundred twenty-one million, four hundred forty thousand, four hundred thirty".