1201264000 has 64 divisors (see below), whose sum is σ = 2986682400. Its totient is φ = 480499200.

The previous prime is 1201263989. The next prime is 1201264021. The reversal of 1201264000 is 4621021.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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, 21540 + ... + 53539.

Almost surely, 2^1201264000 is an apocalyptic number.

1201264000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201264000 is an abundant number, since it is smaller than the sum of its proper divisors (1785418400).

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

1201264000 is an frugal number, since it uses more digits than its factorization.

1201264000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75108 (or 75086 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1201264000 is about 34659.2556180885. The cubic root of 1201264000 is about 1063.0315494867.

Adding to 1201264000 its reverse (4621021), we get a palindrome (1205885021).

The spelling of 1201264000 in words is "one billion, two hundred one million, two hundred sixty-four thousand".