1421288704 has 144 divisors (see below), whose sum is σ = 3218564160. Its totient is φ = 620871680.

The previous prime is 1421288683. The next prime is 1421288707. The reversal of 1421288704 is 4078821241.

It is a happy number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421288707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13283019 + ... + 13283125.

It is an arithmetic number, because the mean of its divisors is an integer number (22351140).

Almost surely, 2^1421288704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421288704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1609282080).

1421288704 is an abundant number, since it is smaller than the sum of its proper divisors (1797275456).

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

1421288704 is a wasteful number, since it uses less digits than its factorization.

1421288704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 1421288704 is about 37699.9828116672. The cubic root of 1421288704 is about 1124.3307832896.

The spelling of 1421288704 in words is "one billion, four hundred twenty-one million, two hundred eighty-eight thousand, seven hundred four".