42540151 has 4 divisors (see below), whose sum is σ = 42553512. Its totient is φ = 42526792.

The previous prime is 42540139. The next prime is 42540167. The reversal of 42540151 is 15104524.

42540151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42540151 - 2¹³ = 42531959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42540101) by changing a digit.

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, 1176 + ... + 9298.

It is an arithmetic number, because the mean of its divisors is an integer number (10638378).

Almost surely, 2^42540151 is an apocalyptic number.

42540151 is a deficient number, since it is larger than the sum of its proper divisors (13361).

42540151 is an equidigital number, since it uses as much as digits as its factorization.

42540151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13360.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 42540151 is about 6522.2811193631. The cubic root of 42540151 is about 349.0864639096.

Adding to 42540151 its reverse (15104524), we get a palindrome (57644675).

The spelling of 42540151 in words is "forty-two million, five hundred forty thousand, one hundred fifty-one".