2539394542 has 4 divisors (see below), whose sum is σ = 3809091816. Its totient is φ = 1269697270.

The previous prime is 2539394531. The next prime is 2539394551. The reversal of 2539394542 is 2454939352.

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

It is a junction number, because it is equal to n+sod(n) for n = 2539394492 and 2539394501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634848634 + ... + 634848637.

It is an arithmetic number, because the mean of its divisors is an integer number (952272954).

Almost surely, 2^2539394542 is an apocalyptic number.

2539394542 is a deficient number, since it is larger than the sum of its proper divisors (1269697274).

2539394542 is a wasteful number, since it uses less digits than its factorization.

2539394542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269697273.

The product of its digits is 1166400, while the sum is 46.

The square root of 2539394542 is about 50392.4055984629. The cubic root of 2539394542 is about 1364.3005700795.

The spelling of 2539394542 in words is "two billion, five hundred thirty-nine million, three hundred ninety-four thousand, five hundred forty-two".