1421233616 has 40 divisors (see below), whose sum is σ = 3025949184. Its totient is φ = 641288960.

The previous prime is 1421233601. The next prime is 1421233633. The reversal of 1421233616 is 6163321241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5360 + ... + 53583.

Almost surely, 2^1421233616 is an apocalyptic number.

1421233616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1421233616 is an abundant number, since it is smaller than the sum of its proper divisors (1604715568).

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

1421233616 is a wasteful number, since it uses less digits than its factorization.

1421233616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59099 (or 59093 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 1421233616 is about 37699.2521941749. The cubic root of 1421233616 is about 1124.3162570515.

Adding to 1421233616 its reverse (6163321241), we get a palindrome (7584554857).

The spelling of 1421233616 in words is "one billion, four hundred twenty-one million, two hundred thirty-three thousand, six hundred sixteen".