1492972321 has 3 divisors (see below), whose sum is σ = 1493010961. Its totient is φ = 1492933682.

The previous prime is 1492972303. The next prime is 1492972337. The reversal of 1492972321 is 1232792941.

The square root of 1492972321 is 38639.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1492972321 - 2⁷ = 1492972193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1492972301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 19320 + ... + 57958.

Almost surely, 2^1492972321 is an apocalyptic number.

1492972321 is the 38639-th square number.

1492972321 is the 19320-th centered octagonal number.

It is an amenable number.

1492972321 is a deficient number, since it is larger than the sum of its proper divisors (38640).

1492972321 is an frugal number, since it uses more digits than its factorization.

1492972321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77278 (or 38639 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The cubic root of 1492972321 is about 1142.9237357796.

The spelling of 1492972321 in words is "one billion, four hundred ninety-two million, nine hundred seventy-two thousand, three hundred twenty-one".