1421043454 has 16 divisors (see below), whose sum is σ = 2237899392. Its totient is φ = 675456408.

The previous prime is 1421043443. The next prime is 1421043469. The reversal of 1421043454 is 4543401241.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87264 + ... + 102259.

It is an arithmetic number, because the mean of its divisors is an integer number (139868712).

Almost surely, 2^1421043454 is an apocalyptic number.

1421043454 is a deficient number, since it is larger than the sum of its proper divisors (816855938).

1421043454 is a wasteful number, since it uses less digits than its factorization.

1421043454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189711.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 1421043454 is about 37696.7300173370. The cubic root of 1421043454 is about 1124.2661100613.

Adding to 1421043454 its reverse (4543401241), we get a palindrome (5964444695).

The spelling of 1421043454 in words is "one billion, four hundred twenty-one million, forty-three thousand, four hundred fifty-four".