7542255540 has 24 divisors (see below), whose sum is σ = 21118315680. Its totient is φ = 2011268128.

The previous prime is 7542255503. The next prime is 7542255551. The reversal of 7542255540 is 455522457.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62852070 + ... + 62852189.

It is an arithmetic number, because the mean of its divisors is an integer number (879929820).

Almost surely, 2^7542255540 is an apocalyptic number.

It is an amenable number.

7542255540 is an abundant number, since it is smaller than the sum of its proper divisors (13576060140).

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

7542255540 is a wasteful number, since it uses less digits than its factorization.

7542255540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125704271 (or 125704269 counting only the distinct ones).

The product of its (nonzero) digits is 280000, while the sum is 39.

The square root of 7542255540 is about 86846.1601914558. The cubic root of 7542255540 is about 1961.1030459878.

Adding to 7542255540 its reverse (455522457), we get a palindrome (7997777997).

The spelling of 7542255540 in words is "seven billion, five hundred forty-two million, two hundred fifty-five thousand, five hundred forty".