1421043455 has 8 divisors (see below), whose sum is σ = 1836425472. Its totient is φ = 1049385888.

The previous prime is 1421043443. The next prime is 1421043469. The reversal of 1421043455 is 5543401241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1421043455 - 2⁶ = 1421043391 is a prime.

It is a Duffinian number.

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, 10931039 + ... + 10931168.

It is an arithmetic number, because the mean of its divisors is an integer number (229553184).

Almost surely, 2^1421043455 is an apocalyptic number.

1421043455 is a deficient number, since it is larger than the sum of its proper divisors (415382017).

1421043455 is a wasteful number, since it uses less digits than its factorization.

1421043455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21862225.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 1421043455 is about 37696.7300306008. The cubic root of 1421043455 is about 1124.2661103250.

Adding to 1421043455 its reverse (5543401241), we get a palindrome (6964444696).

The spelling of 1421043455 in words is "one billion, four hundred twenty-one million, forty-three thousand, four hundred fifty-five".