1421020608 has 56 divisors (see below), whose sum is σ = 4296899712. Its totient is φ = 406005504.

The previous prime is 1421020597. The next prime is 1421020649. The reversal of 1421020608 is 8060201241.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 527310 + ... + 529997.

It is an arithmetic number, because the mean of its divisors is an integer number (76730352).

Almost surely, 2^1421020608 is an apocalyptic number.

It is an amenable number.

1421020608 is an abundant number, since it is smaller than the sum of its proper divisors (2875879104).

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

1421020608 is a wasteful number, since it uses less digits than its factorization.

1421020608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057329 (or 1057319 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1421020608 is about 37696.4269924883. The cubic root of 1421020608 is about 1124.2600851174.

Adding to 1421020608 its reverse (8060201241), we get a palindrome (9481221849).

The spelling of 1421020608 in words is "one billion, four hundred twenty-one million, twenty thousand, six hundred eight".