42540734 has 16 divisors (see below), whose sum is σ = 68601600. Its totient is φ = 19721304.

The previous prime is 42540733. The next prime is 42540761. The reversal of 42540734 is 43704524.

It is a junction number, because it is equal to n+sod(n) for n = 42540697 and 42540706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42540733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10124 + ... + 13695.

It is an arithmetic number, because the mean of its divisors is an integer number (4287600).

Almost surely, 2^42540734 is an apocalyptic number.

42540734 is a deficient number, since it is larger than the sum of its proper divisors (26060866).

42540734 is a wasteful number, since it uses less digits than its factorization.

42540734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23887.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 42540734 is about 6522.3258121624. The cubic root of 42540734 is about 349.0880586108.

The spelling of 42540734 in words is "forty-two million, five hundred forty thousand, seven hundred thirty-four".