1421302144 has 32 divisors (see below), whose sum is σ = 2980531800. Its totient is φ = 673247232.

The previous prime is 1421302139. The next prime is 1421302171. The reversal of 1421302144 is 4412031241.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289777 + ... + 294640.

Almost surely, 2^1421302144 is an apocalyptic number.

It is an amenable number.

1421302144 is an abundant number, since it is smaller than the sum of its proper divisors (1559229656).

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

1421302144 is an equidigital number, since it uses as much as digits as its factorization.

1421302144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584450 (or 584438 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1421302144 is about 37700.1610606639. The cubic root of 1421302144 is about 1124.3343272466.

Adding to 1421302144 its reverse (4412031241), we get a palindrome (5833333385).

The spelling of 1421302144 in words is "one billion, four hundred twenty-one million, three hundred two thousand, one hundred forty-four".