1401001 has 8 divisors (see below), whose sum is σ = 1609344. Its totient is φ = 1194720.

The previous prime is 1400989. The next prime is 1401007. The reversal of 1401001 is 1001041.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1401001 - 2⁷ = 1400873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401007) 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, 1461 + ... + 2221.

It is an arithmetic number, because the mean of its divisors is an integer number (201168).

2^1401001 is an apocalyptic number.

It is an amenable number.

1401001 is a deficient number, since it is larger than the sum of its proper divisors (208343).

1401001 is an equidigital number, since it uses as much as digits as its factorization.

1401001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1401001 is about 1183.6388807402. The cubic root of 1401001 is about 111.8955499427.

Adding to 1401001 its reverse (1001041), we get a palindrome (2402042).

The spelling of 1401001 in words is "one million, four hundred one thousand, one".