494142220 has 144 divisors (see below), whose sum is σ = 1248135840. Its totient is φ = 163215360.

The previous prime is 494142211. The next prime is 494142221. The reversal of 494142220 is 22241494.

It is not an unprimeable number, because it can be changed into a prime (494142221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3554911 + ... + 3555049.

It is an arithmetic number, because the mean of its divisors is an integer number (8667610).

Almost surely, 2^494142220 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 494142220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (624067920).

494142220 is an abundant number, since it is smaller than the sum of its proper divisors (753993620).

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

494142220 is a wasteful number, since it uses less digits than its factorization.

494142220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 494142220 is about 22229.3099308098. The cubic root of 494142220 is about 790.5887935531.

The spelling of 494142220 in words is "four hundred ninety-four million, one hundred forty-two thousand, two hundred twenty".