2540429992 has 8 divisors (see below), whose sum is σ = 4763306250. Its totient is φ = 1270214992.

The previous prime is 2540429951. The next prime is 2540429993. The reversal of 2540429992 is 2999240452.

It can be written as a sum of positive squares in only one way, i.e., 1709491716 + 830938276 = 41346^2 + 28826^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2540429993) 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 as a sum of consecutive naturals, namely, 158776867 + ... + 158776882.

Almost surely, 2^2540429992 is an apocalyptic number.

It is an amenable number.

2540429992 is a deficient number, since it is larger than the sum of its proper divisors (2222876258).

2540429992 is a wasteful number, since it uses less digits than its factorization.

2540429992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317553755 (or 317553751 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 2540429992 is about 50402.6784208935. The cubic root of 2540429992 is about 1364.4859781940.

The spelling of 2540429992 in words is "two billion, five hundred forty million, four hundred twenty-nine thousand, nine hundred ninety-two".