2142444043400 has 96 divisors (see below), whose sum is σ = 5320868360040. Its totient is φ = 799429263360.

The previous prime is 2142444043379. The next prime is 2142444043457. The reversal of 2142444043400 is 43404442412.

It can be written as a sum of positive squares in 12 ways, for example, as 150896510116 + 1991547533284 = 388454^2 + 1411222^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2403989 + ... + 3172388.

Almost surely, 2^{2142444043400} is an apocalyptic number.

2142444043400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2142444043400 is an abundant number, since it is smaller than the sum of its proper divisors (3178424316640).

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

2142444043400 is a wasteful number, since it uses less digits than its factorization.

2142444043400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5576523 (or 5576514 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 2142444043400 its reverse (43404442412), we get a palindrome (2185848485812).

The spelling of 2142444043400 in words is "two trillion, one hundred forty-two billion, four hundred forty-four million, forty-three thousand, four hundred".