7540081420 has 12 divisors (see below), whose sum is σ = 15834171024. Its totient is φ = 3016032560.

The previous prime is 7540081379. The next prime is 7540081447. The reversal of 7540081420 is 241800457.

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, 188502016 + ... + 188502055.

It is an arithmetic number, because the mean of its divisors is an integer number (1319514252).

Almost surely, 2^7540081420 is an apocalyptic number.

It is an amenable number.

7540081420 is an abundant number, since it is smaller than the sum of its proper divisors (8294089604).

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

7540081420 is a wasteful number, since it uses less digits than its factorization.

7540081420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377004080 (or 377004078 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 7540081420 is about 86833.6422131423. The cubic root of 7540081420 is about 1960.9145929414.

Adding to 7540081420 its reverse (241800457), we get a palindrome (7781881877).

The spelling of 7540081420 in words is "seven billion, five hundred forty million, eighty-one thousand, four hundred twenty".