1021352052542 has 32 divisors (see below), whose sum is σ = 1571686502400. Its totient is φ = 497615868288.

The previous prime is 1021352052541. The next prime is 1021352052557. The reversal of 1021352052542 is 2452502531201.

It is a junction number, because it is equal to n+sod(n) for n = 1021352052499 and 1021352052508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021352052541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16798934 + ... + 16859622.

It is an arithmetic number, because the mean of its divisors is an integer number (49115203200).

Almost surely, 2^{1021352052542} is an apocalyptic number.

1021352052542 is a deficient number, since it is larger than the sum of its proper divisors (550334449858).

1021352052542 is a wasteful number, since it uses less digits than its factorization.

1021352052542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62000.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 1021352052542 its reverse (2452502531201), we get a palindrome (3473854583743).

The spelling of 1021352052542 in words is "one trillion, twenty-one billion, three hundred fifty-two million, fifty-two thousand, five hundred forty-two".