42640754 has 16 divisors (see below), whose sum is σ = 69854400. Its totient is φ = 19402320.

The previous prime is 42640753. The next prime is 42640757. The reversal of 42640754 is 45704624.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42640754.

It is not an unprimeable number, because it can be changed into a prime (42640753) 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, 9704 + ... + 13395.

It is an arithmetic number, because the mean of its divisors is an integer number (4365900).

Almost surely, 2^42640754 is an apocalyptic number.

42640754 is a deficient number, since it is larger than the sum of its proper divisors (27213646).

42640754 is a wasteful number, since it uses less digits than its factorization.

42640754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23185.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 42640754 is about 6529.9888208174. The cubic root of 42640754 is about 349.3614315708.

The spelling of 42640754 in words is "forty-two million, six hundred forty thousand, seven hundred fifty-four".