202042124130 has 128 divisors (see below), whose sum is σ = 605957677056. Its totient is φ = 41885164800.

The previous prime is 202042124101. The next prime is 202042124147. The reversal of 202042124130 is 31421240202.

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

It is a junction number, because it is equal to n+sod(n) for n = 202042124097 and 202042124106.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 894144 + ... + 1097076.

It is an arithmetic number, because the mean of its divisors is an integer number (4734044352).

Almost surely, 2^202042124130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202042124130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302978838528).

202042124130 is an abundant number, since it is smaller than the sum of its proper divisors (403915552926).

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

202042124130 is a wasteful number, since it uses less digits than its factorization.

202042124130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203392.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 202042124130 its reverse (31421240202), we get a palindrome (233463364332).

The spelling of 202042124130 in words is "two hundred two billion, forty-two million, one hundred twenty-four thousand, one hundred thirty".