1201272427 has 4 divisors (see below), whose sum is σ = 1214769960. Its totient is φ = 1187774896.

The previous prime is 1201272421. The next prime is 1201272439. The reversal of 1201272427 is 7242721021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7242721021 = 17 ⋅426042413.

It is a cyclic number.

It is not a de Polignac number, because 1201272427 - 2²³ = 1192883819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201272395 and 1201272404.

It is not an unprimeable number, because it can be changed into a prime (1201272421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6748633 + ... + 6748810.

It is an arithmetic number, because the mean of its divisors is an integer number (303692490).

Almost surely, 2^1201272427 is an apocalyptic number.

1201272427 is a deficient number, since it is larger than the sum of its proper divisors (13497533).

1201272427 is an equidigital number, since it uses as much as digits as its factorization.

1201272427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13497532.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 1201272427 is about 34659.3771871336. The cubic root of 1201272427 is about 1063.0340352422.

Adding to 1201272427 its reverse (7242721021), we get a palindrome (8443993448).

The spelling of 1201272427 in words is "one billion, two hundred one million, two hundred seventy-two thousand, four hundred twenty-seven".