1205066240 has 80 divisors (see below), whose sum is σ = 3302145792. Its totient is φ = 413159424.

The previous prime is 1205066171. The next prime is 1205066251. The reversal of 1205066240 is 426605021.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15704 + ... + 51543.

Almost surely, 2^1205066240 is an apocalyptic number.

1205066240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1205066240 is an abundant number, since it is smaller than the sum of its proper divisors (2097079552).

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

1205066240 is an frugal number, since it uses more digits than its factorization.

1205066240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67277 (or 67261 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1205066240 is about 34714.0640086983. The cubic root of 1205066240 is about 1064.1519371471.

The spelling of 1205066240 in words is "one billion, two hundred five million, sixty-six thousand, two hundred forty".