1204520240 has 80 divisors (see below), whose sum is σ = 3491562240. Its totient is φ = 375432960.

The previous prime is 1204520209. The next prime is 1204520279. The reversal of 1204520240 is 420254021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91610 + ... + 103929.

It is an arithmetic number, because the mean of its divisors is an integer number (43644528).

Almost surely, 2^1204520240 is an apocalyptic number.

1204520240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1204520240 is an abundant number, since it is smaller than the sum of its proper divisors (2287042000).

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

1204520240 is a wasteful number, since it uses less digits than its factorization.

1204520240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195570 (or 195564 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1204520240 is about 34706.1988699425. The cubic root of 1204520240 is about 1063.9911950201.

Adding to 1204520240 its reverse (420254021), we get a palindrome (1624774261).

The spelling of 1204520240 in words is "one billion, two hundred four million, five hundred twenty thousand, two hundred forty".