1201427065 has 8 divisors (see below), whose sum is σ = 1461462408. Its totient is φ = 947975040.

The previous prime is 1201427063. The next prime is 1201427099. The reversal of 1201427065 is 5607241021.

It can be written as a sum of positive squares in 4 ways, for example, as 138862656 + 1062564409 = 11784^2 + 32597^2 .

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

It is not a de Polignac number, because 1201427065 - 2¹ = 1201427063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201427063) 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, 1645426 + ... + 1646155.

It is an arithmetic number, because the mean of its divisors is an integer number (182682801).

Almost surely, 2^1201427065 is an apocalyptic number.

It is an amenable number.

1201427065 is a deficient number, since it is larger than the sum of its proper divisors (260035343).

1201427065 is an equidigital number, since it uses as much as digits as its factorization.

1201427065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291659.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1201427065 is about 34661.6079401980. The cubic root of 1201427065 is about 1063.0796475447.

Adding to 1201427065 its reverse (5607241021), we get a palindrome (6808668086).

The spelling of 1201427065 in words is "one billion, two hundred one million, four hundred twenty-seven thousand, sixty-five".