7240251421340 has 24 divisors (see below), whose sum is σ = 17376603411552. Its totient is φ = 2482371915840.

The previous prime is 7240251421309. The next prime is 7240251421343. The reversal of 7240251421340 is 431241520427.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 7240251421340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7240251421343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25858040651 + ... + 25858040930.

It is an arithmetic number, because the mean of its divisors is an integer number (724025142148).

Almost surely, 2^{7240251421340} is an apocalyptic number.

7240251421340 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7240251421340 is an abundant number, since it is smaller than the sum of its proper divisors (10136351990212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7240251421340 is a wasteful number, since it uses less digits than its factorization.

7240251421340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51716081597 (or 51716081595 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

Adding to 7240251421340 its reverse (431241520427), we get a palindrome (7671492941767).

The spelling of 7240251421340 in words is "seven trillion, two hundred forty billion, two hundred fifty-one million, four hundred twenty-one thousand, three hundred forty".