42741040 has 40 divisors (see below), whose sum is σ = 99681120. Its totient is φ = 17043456.

The previous prime is 42741029. The next prime is 42741047. The reversal of 42741040 is 4014724.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (42741047) 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, 34512 + ... + 35728.

It is an arithmetic number, because the mean of its divisors is an integer number (2492028).

Almost surely, 2^42741040 is an apocalyptic number.

42741040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42741040 is an abundant number, since it is smaller than the sum of its proper divisors (56940080).

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

42741040 is a wasteful number, since it uses less digits than its factorization.

42741040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669 (or 1663 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 42741040 is about 6537.6631910798. The cubic root of 42741040 is about 349.6351026967.

Adding to 42741040 its reverse (4014724), we get a palindrome (46755764).

The spelling of 42741040 in words is "forty-two million, seven hundred forty-one thousand, forty".