2578143542 has 16 divisors (see below), whose sum is σ = 4195098432. Its totient is φ = 1181225280.

The previous prime is 2578143541. The next prime is 2578143553. The reversal of 2578143542 is 2453418752.

It is a self number, because there is not a number n which added to its sum of digits gives 2578143542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2578143541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358334 + ... + 365457.

It is an arithmetic number, because the mean of its divisors is an integer number (262193652).

Almost surely, 2^2578143542 is an apocalyptic number.

2578143542 is a deficient number, since it is larger than the sum of its proper divisors (1616954890).

2578143542 is a wasteful number, since it uses less digits than its factorization.

2578143542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723943.

The product of its digits is 268800, while the sum is 41.

The square root of 2578143542 is about 50775.4226176405. The cubic root of 2578143542 is about 1371.2049253498.

The spelling of 2578143542 in words is "two billion, five hundred seventy-eight million, one hundred forty-three thousand, five hundred forty-two".