1421316344 has 24 divisors (see below), whose sum is σ = 3100065840. Its totient is φ = 609135408.

The previous prime is 1421316343. The next prime is 1421316353. The reversal of 1421316344 is 4436131241.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421316343) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1812512 + ... + 1813295.

It is an arithmetic number, because the mean of its divisors is an integer number (129169410).

Almost surely, 2^1421316344 is an apocalyptic number.

1421316344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1421316344 is an abundant number, since it is smaller than the sum of its proper divisors (1678749496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421316344 is a wasteful number, since it uses less digits than its factorization.

1421316344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3625827 (or 3625816 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 1421316344 is about 37700.3493883014. The cubic root of 1421316344 is about 1124.3380715816.

Adding to 1421316344 its reverse (4436131241), we get a palindrome (5857447585).

The spelling of 1421316344 in words is "one billion, four hundred twenty-one million, three hundred sixteen thousand, three hundred forty-four".