2540500442 has 4 divisors (see below), whose sum is σ = 3810750666. Its totient is φ = 1270250220.

The previous prime is 2540500433. The next prime is 2540500453. The reversal of 2540500442 is 2440050452.

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., 1922033281 + 618467161 = 43841^2 + 24869^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635125109 + ... + 635125112.

Almost surely, 2^2540500442 is an apocalyptic number.

2540500442 is a deficient number, since it is larger than the sum of its proper divisors (1270250224).

2540500442 is a wasteful number, since it uses less digits than its factorization.

2540500442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270250223.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 2540500442 is about 50403.3772876382. The cubic root of 2540500442 is about 1364.4985911701.

Adding to 2540500442 its reverse (2440050452), we get a palindrome (4980550894).

The spelling of 2540500442 in words is "two billion, five hundred forty million, five hundred thousand, four hundred forty-two".