203139040 has 96 divisors (see below), whose sum is σ = 521579520. Its totient is φ = 74317824.

The previous prime is 203139031. The next prime is 203139043. The reversal of 203139040 is 40931302.

203139040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203139043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263776 + ... + 264544.

It is an arithmetic number, because the mean of its divisors is an integer number (5433120).

Almost surely, 2^203139040 is an apocalyptic number.

203139040 is a gapful number since it is divisible by the number (20) 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 203139040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260789760).

203139040 is an abundant number, since it is smaller than the sum of its proper divisors (318440480).

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

203139040 is a wasteful number, since it uses less digits than its factorization.

203139040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924 (or 916 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 203139040 is about 14252.6853610118. The cubic root of 203139040 is about 587.8472153060.

The spelling of 203139040 in words is "two hundred three million, one hundred thirty-nine thousand, forty".