1201734321 has 8 divisors (see below), whose sum is σ = 1616492640. Its totient is φ = 794066112.

The previous prime is 1201734283. The next prime is 1201734329. The reversal of 1201734321 is 1234371021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1201734321 - 2⁶ = 1201734257 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1201734291 and 1201734300.

It is not an unprimeable number, because it can be changed into a prime (1201734329) 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, 1772131 + ... + 1772808.

It is an arithmetic number, because the mean of its divisors is an integer number (202061580).

Almost surely, 2^1201734321 is an apocalyptic number.

It is an amenable number.

1201734321 is a deficient number, since it is larger than the sum of its proper divisors (414758319).

1201734321 is a wasteful number, since it uses less digits than its factorization.

1201734321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3545055.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1201734321 is about 34666.0398805517. The cubic root of 1201734321 is about 1063.1702647140.

The spelling of 1201734321 in words is "one billion, two hundred one million, seven hundred thirty-four thousand, three hundred twenty-one".