42540534 has 48 divisors (see below), whose sum is σ = 96117840. Its totient is φ = 13585920.

The previous prime is 42540529. The next prime is 42540539. The reversal of 42540534 is 43504524.

It is an interprime number because it is at equal distance from previous prime (42540529) and next prime (42540539).

It is a junction number, because it is equal to n+sod(n) for n = 42540498 and 42540507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42540539) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43054 + ... + 44030.

It is an arithmetic number, because the mean of its divisors is an integer number (2002455).

Almost surely, 2^42540534 is an apocalyptic number.

42540534 is an abundant number, since it is smaller than the sum of its proper divisors (53577306).

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

42540534 is a wasteful number, since it uses less digits than its factorization.

42540534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085 (or 1082 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 42540534 is about 6522.3104801903. The cubic root of 42540534 is about 349.0875115451.

The spelling of 42540534 in words is "forty-two million, five hundred forty thousand, five hundred thirty-four".