1020642422054 has 4 divisors (see below), whose sum is σ = 1530963633084. Its totient is φ = 510321211026.

The previous prime is 1020642422053. The next prime is 1020642422057. The reversal of 1020642422054 is 4502242460201.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1020642422054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020642422053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255160605512 + ... + 255160605515.

It is an arithmetic number, because the mean of its divisors is an integer number (382740908271).

Almost surely, 2^{1020642422054} is an apocalyptic number.

1020642422054 is a deficient number, since it is larger than the sum of its proper divisors (510321211030).

1020642422054 is an equidigital number, since it uses as much as digits as its factorization.

1020642422054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510321211029.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 1020642422054 its reverse (4502242460201), we get a palindrome (5522884882255).

The spelling of 1020642422054 in words is "one trillion, twenty billion, six hundred forty-two million, four hundred twenty-two thousand, fifty-four".