2547203842 has 4 divisors (see below), whose sum is σ = 3820805766. Its totient is φ = 1273601920.

The previous prime is 2547203833. The next prime is 2547203861. The reversal of 2547203842 is 2483027452.

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

It can be written as a sum of positive squares in only one way, i.e., 2503100961 + 44102881 = 50031^2 + 6641^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 636800959 + ... + 636800962.

Almost surely, 2^2547203842 is an apocalyptic number.

2547203842 is a deficient number, since it is larger than the sum of its proper divisors (1273601924).

2547203842 is a wasteful number, since it uses less digits than its factorization.

2547203842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273601923.

The product of its (nonzero) digits is 107520, while the sum is 37.

The square root of 2547203842 is about 50469.8310082370. The cubic root of 2547203842 is about 1365.6976655122.

The spelling of 2547203842 in words is "two billion, five hundred forty-seven million, two hundred three thousand, eight hundred forty-two".