42540696 has 144 divisors (see below), whose sum is σ = 133824600. Its totient is φ = 12165120.

The previous prime is 42540691. The next prime is 42540697. The reversal of 42540696 is 69604524.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 42540696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42540691) 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 35 ways as a sum of consecutive naturals, for example, 165400 + ... + 165656.

Almost surely, 2^42540696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42540696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66912300).

42540696 is an abundant number, since it is smaller than the sum of its proper divisors (91283904).

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

42540696 is a wasteful number, since it uses less digits than its factorization.

42540696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 42540696 is about 6522.3228990905. The cubic root of 42540696 is about 349.0879546684.

The spelling of 42540696 in words is "forty-two million, five hundred forty thousand, six hundred ninety-six".