1020123442351 has 16 divisors (see below), whose sum is σ = 1102546622464. Its totient is φ = 938267276544.

The previous prime is 1020123442337. The next prime is 1020123442357. The reversal of 1020123442351 is 1532443210201.

1020123442351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1020123442351 - 2¹⁷ = 1020123311279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020123442357) 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, 10355410 + ... + 10453456.

It is an arithmetic number, because the mean of its divisors is an integer number (68909163904).

Almost surely, 2^{1020123442351} is an apocalyptic number.

1020123442351 is a deficient number, since it is larger than the sum of its proper divisors (82423180113).

1020123442351 is a wasteful number, since it uses less digits than its factorization.

1020123442351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100930.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 1020123442351 its reverse (1532443210201), we get a palindrome (2552566652552).

The spelling of 1020123442351 in words is "one trillion, twenty billion, one hundred twenty-three million, four hundred forty-two thousand, three hundred fifty-one".