50142540 has 96 divisors (see below), whose sum is σ = 161409024. Its totient is φ = 11393280.

The previous prime is 50142529. The next prime is 50142551. The reversal of 50142540 is 4524105.

It is an interprime number because it is at equal distance from previous prime (50142529) and next prime (50142551).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116125 + ... + 116555.

It is an arithmetic number, because the mean of its divisors is an integer number (1681344).

Almost surely, 2^50142540 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 50142540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80704512).

50142540 is an abundant number, since it is smaller than the sum of its proper divisors (111266484).

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

50142540 is a wasteful number, since it uses less digits than its factorization.

50142540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727 (or 725 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 50142540 is about 7081.1397387709. The cubic root of 50142540 is about 368.7528989526.

Adding to 50142540 its reverse (4524105), we get a palindrome (54666645).

The spelling of 50142540 in words is "fifty million, one hundred forty-two thousand, five hundred forty".