1205033140 has 24 divisors (see below), whose sum is σ = 2534472360. Its totient is φ = 481269888.

The previous prime is 1205033111. The next prime is 1205033149. The reversal of 1205033140 is 413305021.

It can be written as a sum of positive squares in 4 ways, for example, as 12574116 + 1192459024 = 3546^2 + 34532^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205033149) 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, 33075 + ... + 59194.

It is an arithmetic number, because the mean of its divisors is an integer number (105603015).

Almost surely, 2^1205033140 is an apocalyptic number.

1205033140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1205033140 is an abundant number, since it is smaller than the sum of its proper divisors (1329439220).

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

1205033140 is a wasteful number, since it uses less digits than its factorization.

1205033140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92931 (or 92929 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1205033140 is about 34713.5872534084. The cubic root of 1205033140 is about 1064.1421939063.

Adding to 1205033140 its reverse (413305021), we get a palindrome (1618338161).

The spelling of 1205033140 in words is "one billion, two hundred five million, thirty-three thousand, one hundred forty".