1201401 has 12 divisors (see below), whose sum is σ = 1750320. Its totient is φ = 794040.

The previous prime is 1201381. The next prime is 1201439. The reversal of 1201401 is 1041021.

It is a happy number.

It is not a de Polignac number, because 1201401 - 2⁶ = 1201337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1201481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 670 + ... + 1688.

It is an arithmetic number, because the mean of its divisors is an integer number (145860).

2^1201401 is an apocalyptic number.

It is an amenable number.

1201401 is a deficient number, since it is larger than the sum of its proper divisors (548919).

1201401 is a wasteful number, since it uses less digits than its factorization.

1201401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156 (or 1153 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1201401 is about 1096.0843945609. The cubic root of 1201401 is about 106.3071959640.

Adding to 1201401 its reverse (1041021), we get a palindrome (2242422).

It can be divided in two parts, 120 and 1401, that added together give a square (1521 = 39²).

The spelling of 1201401 in words is "one million, two hundred one thousand, four hundred one".