1043142431994 has 72 divisors (see below), whose sum is σ = 2457529429212. Its totient is φ = 319634864640.

The previous prime is 1043142431953. The next prime is 1043142432029. The reversal of 1043142431994 is 4991342413401.

1043142431994 is a `hidden beast` number, since 1 + 0 + 4 + 31 + 424 + 3 + 199 + 4 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 370438997769 + 672703434225 = 608637^2 + 820185^2 .

It is a super-2 number, since 2×1043142431994² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21684 + ... + 1444560.

Almost surely, 2^{1043142431994} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1043142431994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1228764714606).

1043142431994 is an abundant number, since it is smaller than the sum of its proper divisors (1414386997218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1043142431994 is a wasteful number, since it uses less digits than its factorization.

1043142431994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423152 (or 1423136 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 1043142431994 in words is "one trillion, forty-three billion, one hundred forty-two million, four hundred thirty-one thousand, nine hundred ninety-four".