1401081 has 8 divisors (see below), whose sum is σ = 2037984. Its totient is φ = 849120.

The previous prime is 1401067. The next prime is 1401083. The reversal of 1401081 is 1801041.

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

It is not a de Polignac number, because 1401081 - 2⁶ = 1401017 is a prime.

It is a super-2 number, since 2×1401081² = 3926055937122, which contains 22 as substring.

It is an Ulam number.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 1401081.

It is not an unprimeable number, because it can be changed into a prime (1401083) 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 7 ways as a sum of consecutive naturals, for example, 21196 + ... + 21261.

It is an arithmetic number, because the mean of its divisors is an integer number (254748).

2^1401081 is an apocalyptic number.

1401081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1401081 is a deficient number, since it is larger than the sum of its proper divisors (636903).

1401081 is a wasteful number, since it uses less digits than its factorization.

1401081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42471.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1401081 is about 1183.6726743488. The cubic root of 1401081 is about 111.8976797231.

It can be divided in two parts, 140 and 1081, that added together give a palindrome (1221).

The spelling of 1401081 in words is "one million, four hundred one thousand, eighty-one".