1302421444 has 12 divisors (see below), whose sum is σ = 2311339968. Its totient is φ = 642038600.

The previous prime is 1302421429. The next prime is 1302421447. The reversal of 1302421444 is 4441242031.

It is not an unprimeable number, because it can be changed into a prime (1302421447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2292712 + ... + 2293279.

It is an arithmetic number, because the mean of its divisors is an integer number (192611664).

Almost surely, 2^1302421444 is an apocalyptic number.

It is an amenable number.

1302421444 is a deficient number, since it is larger than the sum of its proper divisors (1008918524).

1302421444 is a wasteful number, since it uses less digits than its factorization.

1302421444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4586066 (or 4586064 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1302421444 is about 36089.0765190798. The cubic root of 1302421444 is about 1092.0700901399.

Adding to 1302421444 its reverse (4441242031), we get a palindrome (5743663475).

The spelling of 1302421444 in words is "one billion, three hundred two million, four hundred twenty-one thousand, four hundred forty-four".