1204535140 has 12 divisors (see below), whose sum is σ = 2529523836. Its totient is φ = 481814048.

The previous prime is 1204535107. The next prime is 1204535141. The reversal of 1204535140 is 415354021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 598193764 + 606341376 = 24458^2 + 24624^2 .

It is not an unprimeable number, because it can be changed into a prime (1204535141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30113359 + ... + 30113398.

It is an arithmetic number, because the mean of its divisors is an integer number (210793653).

Almost surely, 2^1204535140 is an apocalyptic number.

1204535140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1204535140 is an abundant number, since it is smaller than the sum of its proper divisors (1324988696).

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

1204535140 is a wasteful number, since it uses less digits than its factorization.

1204535140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60226766 (or 60226764 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1204535140 is about 34706.4135283380. The cubic root of 1204535140 is about 1063.9955822173.

Adding to 1204535140 its reverse (415354021), we get a palindrome (1619889161).

The spelling of 1204535140 in words is "one billion, two hundred four million, five hundred thirty-five thousand, one hundred forty".