2521303742 has 8 divisors (see below), whose sum is σ = 3782680776. Its totient is φ = 1260410152.

The previous prime is 2521303679. The next prime is 2521303747. The reversal of 2521303742 is 2473031252.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521303747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107528 + ... + 128859.

It is an arithmetic number, because the mean of its divisors is an integer number (472835097).

Almost surely, 2^2521303742 is an apocalyptic number.

2521303742 is a deficient number, since it is larger than the sum of its proper divisors (1261377034).

2521303742 is a wasteful number, since it uses less digits than its factorization.

2521303742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241722.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 2521303742 is about 50212.5854940771. The cubic root of 2521303742 is about 1361.0530594688.

Adding to 2521303742 its reverse (2473031252), we get a palindrome (4994334994).

The spelling of 2521303742 in words is "two billion, five hundred twenty-one million, three hundred three thousand, seven hundred forty-two".