501220542 has 16 divisors (see below), whose sum is σ = 1003151232. Its totient is φ = 166955160.

The previous prime is 501220507. The next prime is 501220547. The reversal of 501220542 is 245022105.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501220547) 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, 20184 + ... + 37547.

It is an arithmetic number, because the mean of its divisors is an integer number (62696952).

Almost surely, 2^501220542 is an apocalyptic number.

501220542 is an abundant number, since it is smaller than the sum of its proper divisors (501930690).

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

501220542 is a wasteful number, since it uses less digits than its factorization.

501220542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59183.

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

The square root of 501220542 is about 22387.9552885028. The cubic root of 501220542 is about 794.3458310722.

Adding to 501220542 its reverse (245022105), we get a palindrome (746242647).

The spelling of 501220542 in words is "five hundred one million, two hundred twenty thousand, five hundred forty-two".