1421406344 has 8 divisors (see below), whose sum is σ = 2665136910. Its totient is φ = 710703168.

The previous prime is 1421406341. The next prime is 1421406361. The reversal of 1421406344 is 4436041241.

It can be written as a sum of positive squares in only one way, i.e., 1401603844 + 19802500 = 37438^2 + 4450^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1421406341) 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 as a sum of consecutive naturals, namely, 88837889 + ... + 88837904.

Almost surely, 2^1421406344 is an apocalyptic number.

It is an amenable number.

1421406344 is a deficient number, since it is larger than the sum of its proper divisors (1243730566).

1421406344 is a wasteful number, since it uses less digits than its factorization.

1421406344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177675799 (or 177675795 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 1421406344 is about 37701.5429922967. The cubic root of 1421406344 is about 1124.3618027027.

Adding to 1421406344 its reverse (4436041241), we get a palindrome (5857447585).

The spelling of 1421406344 in words is "one billion, four hundred twenty-one million, four hundred six thousand, three hundred forty-four".