2531404042 has 8 divisors (see below), whose sum is σ = 3889718532. Its totient is φ = 1234831200.

The previous prime is 2531404037. The next prime is 2531404063. The reversal of 2531404042 is 2404041352.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2527977841 + 3426201 = 50279^2 + 1851^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2531403998 and 2531404016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15435309 + ... + 15435472.

Almost surely, 2^2531404042 is an apocalyptic number.

2531404042 is a deficient number, since it is larger than the sum of its proper divisors (1358314490).

2531404042 is a wasteful number, since it uses less digits than its factorization.

2531404042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30870824.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2531404042 is about 50313.0603521591. The cubic root of 2531404042 is about 1362.8680897809.

Adding to 2531404042 its reverse (2404041352), we get a palindrome (4935445394).

The spelling of 2531404042 in words is "two billion, five hundred thirty-one million, four hundred four thousand, forty-two".