1019123421143 has 4 divisors (see below), whose sum is σ = 1072761495960. Its totient is φ = 965485346328.

The previous prime is 1019123421097. The next prime is 1019123421223. The reversal of 1019123421143 is 3411243219101.

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

It is a cyclic number.

It is not a de Polignac number, because 1019123421143 - 2²⁶ = 1019056312279 is a prime.

It is a super-2 number, since 2×1019123421143² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1019123421643) 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, 26819037380 + ... + 26819037417.

It is an arithmetic number, because the mean of its divisors is an integer number (268190373990).

Almost surely, 2^{1019123421143} is an apocalyptic number.

1019123421143 is a deficient number, since it is larger than the sum of its proper divisors (53638074817).

1019123421143 is an equidigital number, since it uses as much as digits as its factorization.

1019123421143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53638074816.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 1019123421143 in words is "one trillion, nineteen billion, one hundred twenty-three million, four hundred twenty-one thousand, one hundred forty-three".