50142240 has 240 divisors, whose sum is σ = 182769048. Its totient is φ = 12939264.

The previous prime is 50142203. The next prime is 50142269. The reversal of 50142240 is 4224105.

It can be written as a sum of positive squares in 4 ways, for example, as 45319824 + 4822416 = 6732^2 + 2196^2 .

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 686844 + ... + 686916.

Almost surely, 2^50142240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50142240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91384524).

50142240 is an abundant number, since it is smaller than the sum of its proper divisors (132626808).

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

50142240 is a wasteful number, since it uses less digits than its factorization.

50142240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 50142240 is about 7081.1185557086. The cubic root of 50142240 is about 368.7521635418.

Adding to 50142240 its reverse (4224105), we get a palindrome (54366345).

The spelling of 50142240 in words is "fifty million, one hundred forty-two thousand, two hundred forty".