203120040 has 32 divisors (see below), whose sum is σ = 609360480. Its totient is φ = 54165312.

The previous prime is 203120039. The next prime is 203120053. The reversal of 203120040 is 40021302.

203120040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 203119998 and 203120025.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846214 + ... + 846453.

It is an arithmetic number, because the mean of its divisors is an integer number (19042515).

Almost surely, 2^203120040 is an apocalyptic number.

203120040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203120040 is an abundant number, since it is smaller than the sum of its proper divisors (406240440).

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

203120040 is a wasteful number, since it uses less digits than its factorization.

203120040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692681 (or 1692677 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 203120040 is about 14252.0188043659. The cubic root of 203120040 is about 587.8288872266.

Adding to 203120040 its reverse (40021302), we get a palindrome (243141342).

The spelling of 203120040 in words is "two hundred three million, one hundred twenty thousand, forty".