1421044457 has 8 divisors (see below), whose sum is σ = 1680052800. Its totient is φ = 1176036624.

The previous prime is 1421044451. The next prime is 1421044487. The reversal of 1421044457 is 7544401241.

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

It is not a de Polignac number, because 1421044457 - 2¹⁴ = 1421028073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421044451) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3499907 + ... + 3500312.

It is an arithmetic number, because the mean of its divisors is an integer number (210006600).

Almost surely, 2^1421044457 is an apocalyptic number.

It is an amenable number.

1421044457 is a deficient number, since it is larger than the sum of its proper divisors (259008343).

1421044457 is an equidigital number, since it uses as much as digits as its factorization.

1421044457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7000255.

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 1421044457 is about 37696.7433208759. The cubic root of 1421044457 is about 1124.2663745708.

Adding to 1421044457 its reverse (7544401241), we get a palindrome (8965445698).

The spelling of 1421044457 in words is "one billion, four hundred twenty-one million, forty-four thousand, four hundred fifty-seven".