42540355 has 16 divisors (see below), whose sum is σ = 59973984. Its totient is φ = 28558080.

The previous prime is 42540349. The next prime is 42540359. The reversal of 42540355 is 55304524.

It is not a de Polignac number, because 42540355 - 2⁷ = 42540227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42540359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29034 + ... + 30463.

It is an arithmetic number, because the mean of its divisors is an integer number (3748374).

Almost surely, 2^42540355 is an apocalyptic number.

42540355 is a deficient number, since it is larger than the sum of its proper divisors (17433629).

42540355 is a wasteful number, since it uses less digits than its factorization.

42540355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59526.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 42540355 is about 6522.2967580447. The cubic root of 42540355 is about 349.0870219199.

Adding to 42540355 its reverse (55304524), we get a palindrome (97844879).

The spelling of 42540355 in words is "forty-two million, five hundred forty thousand, three hundred fifty-five".