2542382821 has 8 divisors (see below), whose sum is σ = 2774016000. Its totient is φ = 2310834240.

The previous prime is 2542382803. The next prime is 2542382831. The reversal of 2542382821 is 1282832452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2542382821 - 2⁵ = 2542382789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2542382831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53020 + ... + 88858.

It is an arithmetic number, because the mean of its divisors is an integer number (346752000).

Almost surely, 2^2542382821 is an apocalyptic number.

It is an amenable number.

2542382821 is a deficient number, since it is larger than the sum of its proper divisors (231633179).

2542382821 is a wasteful number, since it uses less digits than its factorization.

2542382821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42299.

The product of its digits is 61440, while the sum is 37.

The square root of 2542382821 is about 50422.0469735214. The cubic root of 2542382821 is about 1364.8355155199.

The spelling of 2542382821 in words is "two billion, five hundred forty-two million, three hundred eighty-two thousand, eight hundred twenty-one".