203012420 has 24 divisors (see below), whose sum is σ = 459120984. Its totient is φ = 74958336.

The previous prime is 203012399. The next prime is 203012423. The reversal of 203012420 is 24210302.

It can be written as a sum of positive squares in 4 ways, for example, as 917764 + 202094656 = 958^2 + 14216^2 .

It is a junction number, because it is equal to n+sod(n) for n = 203012395 and 203012404.

It is not an unprimeable number, because it can be changed into a prime (203012423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390149 + ... + 390668.

It is an arithmetic number, because the mean of its divisors is an integer number (19130041).

Almost surely, 2^203012420 is an apocalyptic number.

203012420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203012420 is an abundant number, since it is smaller than the sum of its proper divisors (256108564).

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

203012420 is a wasteful number, since it uses less digits than its factorization.

203012420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780839 (or 780837 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 203012420 is about 14248.2426986629. The cubic root of 203012420 is about 587.7250515490.

Adding to 203012420 its reverse (24210302), we get a palindrome (227222722).

The spelling of 203012420 in words is "two hundred three million, twelve thousand, four hundred twenty".