501422130 has 128 divisors (see below), whose sum is σ = 1467797760. Its totient is φ = 120798720.

The previous prime is 501422107. The next prime is 501422137. The reversal of 501422130 is 31224105.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (501422137) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 584662 + ... + 585518.

It is an arithmetic number, because the mean of its divisors is an integer number (11467170).

Almost surely, 2^501422130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501422130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (733898880).

501422130 is an abundant number, since it is smaller than the sum of its proper divisors (966375630).

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

501422130 is a wasteful number, since it uses less digits than its factorization.

501422130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 501422130 is about 22392.4569889059. The cubic root of 501422130 is about 794.4523105630.

Adding to 501422130 its reverse (31224105), we get a palindrome (532646235).

The spelling of 501422130 in words is "five hundred one million, four hundred twenty-two thousand, one hundred thirty".