1421317732724 has 12 divisors (see below), whose sum is σ = 2547972033348. Its totient is φ = 693325723200.

The previous prime is 1421317732661. The next prime is 1421317732727. The reversal of 1421317732724 is 4272377131241.

It can be written as a sum of positive squares in 2 ways, for example, as 450265156324 + 971052576400 = 671018^2 + 985420^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421317732727) 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, 4333285607 + ... + 4333285934.

It is an arithmetic number, because the mean of its divisors is an integer number (212331002779).

Almost surely, 2^{1421317732724} is an apocalyptic number.

It is an amenable number.

1421317732724 is a deficient number, since it is larger than the sum of its proper divisors (1126654300624).

1421317732724 is a wasteful number, since it uses less digits than its factorization.

1421317732724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8666571586 (or 8666571584 counting only the distinct ones).

The product of its digits is 395136, while the sum is 44.

The spelling of 1421317732724 in words is "one trillion, four hundred twenty-one billion, three hundred seventeen million, seven hundred thirty-two thousand, seven hundred twenty-four".