1421100434 has 8 divisors (see below), whose sum is σ = 2295623820. Its totient is φ = 655892496.

The previous prime is 1421100377. The next prime is 1421100437. The reversal of 1421100434 is 4340011241.

It can be written as a sum of positive squares in 2 ways, for example, as 1409777209 + 11323225 = 37547^2 + 3365^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1421100437) 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, 27328829 + ... + 27328880.

Almost surely, 2^1421100434 is an apocalyptic number.

1421100434 is a deficient number, since it is larger than the sum of its proper divisors (874523386).

1421100434 is a wasteful number, since it uses less digits than its factorization.

1421100434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54657724.

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

The square root of 1421100434 is about 37697.4857782319. The cubic root of 1421100434 is about 1124.2811365375.

Adding to 1421100434 its reverse (4340011241), we get a palindrome (5761111675).

The spelling of 1421100434 in words is "one billion, four hundred twenty-one million, one hundred thousand, four hundred thirty-four".