1320412240 has 40 divisors (see below), whose sum is σ = 3508525440. Its totient is φ = 452712576.

The previous prime is 1320412211. The next prime is 1320412243. The reversal of 1320412240 is 422140231.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320412243) 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, 1178380 + ... + 1179499.

It is an arithmetic number, because the mean of its divisors is an integer number (87713136).

Almost surely, 2^1320412240 is an apocalyptic number.

1320412240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320412240 is an abundant number, since it is smaller than the sum of its proper divisors (2188113200).

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

1320412240 is a wasteful number, since it uses less digits than its factorization.

1320412240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357899 (or 2357893 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1320412240 is about 36337.4770725762. The cubic root of 1320412240 is about 1097.0754933813.

Adding to 1320412240 its reverse (422140231), we get a palindrome (1742552471).

The spelling of 1320412240 in words is "one billion, three hundred twenty million, four hundred twelve thousand, two hundred forty".