1020542427742 has 8 divisors (see below), whose sum is σ = 1583600319000. Its totient is φ = 492675654744.

The previous prime is 1020542427731. The next prime is 1020542427743. The reversal of 1020542427742 is 2477242450201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1020542427695 and 1020542427704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020542427743) 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, 8797779492 + ... + 8797779607.

It is an arithmetic number, because the mean of its divisors is an integer number (197950039875).

Almost surely, 2^{1020542427742} is an apocalyptic number.

1020542427742 is a deficient number, since it is larger than the sum of its proper divisors (563057891258).

1020542427742 is a wasteful number, since it uses less digits than its factorization.

1020542427742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17595559130.

The product of its (nonzero) digits is 250880, while the sum is 40.

Adding to 1020542427742 its reverse (2477242450201), we get a palindrome (3497784877943).

The spelling of 1020542427742 in words is "one trillion, twenty billion, five hundred forty-two million, four hundred twenty-seven thousand, seven hundred forty-two".