1201253401 has 16 divisors (see below), whose sum is σ = 1243351296. Its totient is φ = 1159962496.

The previous prime is 1201253377. The next prime is 1201253437. The reversal of 1201253401 is 1043521021.

It is a cyclic number.

It is not a de Polignac number, because 1201253401 - 2⁹ = 1201252889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201253491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1268010 + ... + 1268956.

It is an arithmetic number, because the mean of its divisors is an integer number (77709456).

Almost surely, 2^1201253401 is an apocalyptic number.

It is an amenable number.

1201253401 is a deficient number, since it is larger than the sum of its proper divisors (42097895).

1201253401 is a wasteful number, since it uses less digits than its factorization.

1201253401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1201253401 is about 34659.1027148713. The cubic root of 1201253401 is about 1063.0284230286.

Adding to 1201253401 its reverse (1043521021), we get a palindrome (2244774422).

It can be divided in two parts, 120 and 1253401, that added together give a palindrome (1253521).

The spelling of 1201253401 in words is "one billion, two hundred one million, two hundred fifty-three thousand, four hundred one".