1421938312 has 8 divisors (see below), whose sum is σ = 2666134350. Its totient is φ = 710969152.

The previous prime is 1421938307. The next prime is 1421938333. The reversal of 1421938312 is 2138391241.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1200345316 + 221592996 = 34646^2 + 14886^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 88871137 + ... + 88871152.

Almost surely, 2^1421938312 is an apocalyptic number.

It is an amenable number.

1421938312 is a deficient number, since it is larger than the sum of its proper divisors (1244196038).

1421938312 is a wasteful number, since it uses less digits than its factorization.

1421938312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177742295 (or 177742291 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 1421938312 is about 37708.5973220962. The cubic root of 1421938312 is about 1124.5020511030.

The spelling of 1421938312 in words is "one billion, four hundred twenty-one million, nine hundred thirty-eight thousand, three hundred twelve".