6442043542 has 16 divisors (see below), whose sum is σ = 10551593664. Its totient is φ = 2925405000.

The previous prime is 6442043507. The next prime is 6442043599. The reversal of 6442043542 is 2453402446.

It is a junction number, because it is equal to n+sod(n) for n = 6442043498 and 6442043507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116184 + ... + 162427.

It is an arithmetic number, because the mean of its divisors is an integer number (659474604).

Almost surely, 2^6442043542 is an apocalyptic number.

6442043542 is a deficient number, since it is larger than the sum of its proper divisors (4109550122).

6442043542 is a wasteful number, since it uses less digits than its factorization.

6442043542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279675.

The product of its (nonzero) digits is 92160, while the sum is 34.

The square root of 6442043542 is about 80262.3419917460. The cubic root of 6442043542 is about 1860.6922638040.

Adding to 6442043542 its reverse (2453402446), we get a palindrome (8895445988).

It can be divided in two parts, 644204 and 3542, that added together give a palindrome (647746).

The spelling of 6442043542 in words is "six billion, four hundred forty-two million, forty-three thousand, five hundred forty-two".