1204430040 has 128 divisors (see below), whose sum is σ = 4379788800. Its totient is φ = 291980160.

The previous prime is 1204430033. The next prime is 1204430041. The reversal of 1204430040 is 400344021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1204429995 and 1204430022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204430041) 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, 38812 + ... + 62571.

It is an arithmetic number, because the mean of its divisors is an integer number (34217100).

Almost surely, 2^1204430040 is an apocalyptic number.

1204430040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1204430040 is an abundant number, since it is smaller than the sum of its proper divisors (3175358760).

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

1204430040 is a wasteful number, since it uses less digits than its factorization.

1204430040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101414 (or 101404 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1204430040 is about 34704.8993659397. The cubic root of 1204430040 is about 1063.9646355103.

Adding to 1204430040 its reverse (400344021), we get a palindrome (1604774061).

The spelling of 1204430040 in words is "one billion, two hundred four million, four hundred thirty thousand, forty".