1430401421 has 4 divisors (see below), whose sum is σ = 1431487200. Its totient is φ = 1429315644.

The previous prime is 1430401397. The next prime is 1430401439. The reversal of 1430401421 is 1241040341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1430401421 - 2²² = 1426207117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1430401393 and 1430401402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1430401451) 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 3 ways as a sum of consecutive naturals, for example, 540911 + ... + 543548.

It is an arithmetic number, because the mean of its divisors is an integer number (357871800).

Almost surely, 2^1430401421 is an apocalyptic number.

It is an amenable number.

1430401421 is a deficient number, since it is larger than the sum of its proper divisors (1085779).

1430401421 is a wasteful number, since it uses less digits than its factorization.

1430401421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085778.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1430401421 is about 37820.6480774722. The cubic root of 1430401421 is about 1126.7285810989.

Adding to 1430401421 its reverse (1241040341), we get a palindrome (2671441762).

The spelling of 1430401421 in words is "one billion, four hundred thirty million, four hundred one thousand, four hundred twenty-one".