1021734672542 has 16 divisors (see below), whose sum is σ = 1566106755840. Its totient is φ = 499711534488.

The previous prime is 1021734672499. The next prime is 1021734672599. The reversal of 1021734672542 is 2452764371201.

It is a junction number, because it is equal to n+sod(n) for n = 1021734672493 and 1021734672502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2946692 + ... + 3275127.

It is an arithmetic number, because the mean of its divisors is an integer number (97881672240).

Almost surely, 2^{1021734672542} is an apocalyptic number.

1021734672542 is a deficient number, since it is larger than the sum of its proper divisors (544372083298).

1021734672542 is a wasteful number, since it uses less digits than its factorization.

1021734672542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6223615.

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 1021734672542 in words is "one trillion, twenty-one billion, seven hundred thirty-four million, six hundred seventy-two thousand, five hundred forty-two".