502139000 has 128 divisors (see below), whose sum is σ = 1293926400. Its totient is φ = 180880000.

The previous prime is 502138997. The next prime is 502139003. The reversal of 502139000 is 931205.

It is an interprime number because it is at equal distance from previous prime (502138997) and next prime (502139003).

It is a super-3 number, since 3×502139000³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (502139003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2100881 + ... + 2101119.

It is an arithmetic number, because the mean of its divisors is an integer number (10108800).

Almost surely, 2^502139000 is an apocalyptic number.

502139000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 502139000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (646963200).

502139000 is an abundant number, since it is smaller than the sum of its proper divisors (791787400).

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

502139000 is a wasteful number, since it uses less digits than its factorization.

502139000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 502139000 is about 22408.4582245187. The cubic root of 502139000 is about 794.8307327881.

The spelling of 502139000 in words is "five hundred two million, one hundred thirty-nine thousand".