1020134105542 has 4 divisors (see below), whose sum is σ = 1530201158316. Its totient is φ = 510067052770.

The previous prime is 1020134105533. The next prime is 1020134105563. The reversal of 1020134105542 is 2455014310201.

1020134105542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1020134105542² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1020134105542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255033526384 + ... + 255033526387.

It is an arithmetic number, because the mean of its divisors is an integer number (382550289579).

Almost surely, 2^{1020134105542} is an apocalyptic number.

1020134105542 is a deficient number, since it is larger than the sum of its proper divisors (510067052774).

1020134105542 is an equidigital number, since it uses as much as digits as its factorization.

1020134105542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510067052773.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 1020134105542 its reverse (2455014310201), we get a palindrome (3475148415743).

The spelling of 1020134105542 in words is "one trillion, twenty billion, one hundred thirty-four million, one hundred five thousand, five hundred forty-two".