50042640 has 40 divisors (see below), whose sum is σ = 155132928. Its totient is φ = 13344640.

The previous prime is 50042627. The next prime is 50042647. The reversal of 50042640 is 4624005.

It is a happy number.

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 (50042647) 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, 104016 + ... + 104495.

Almost surely, 2^50042640 is an apocalyptic number.

It is an amenable number.

50042640 is an abundant number, since it is smaller than the sum of its proper divisors (105090288).

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

50042640 is a wasteful number, since it uses less digits than its factorization.

50042640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208527 (or 208521 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 50042640 is about 7074.0822726344. The cubic root of 50042640 is about 368.5078448438.

Adding to 50042640 its reverse (4624005), we get a palindrome (54666645).

The spelling of 50042640 in words is "fifty million, forty-two thousand, six hundred forty".