1401281 has 4 divisors (see below), whose sum is σ = 1601472. Its totient is φ = 1201092.

The previous prime is 1401263. The next prime is 1401287. The reversal of 1401281 is 1821041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1821041 = 181 ⋅10061.

It is a cyclic number.

It is not a de Polignac number, because 1401281 - 2⁶ = 1401217 is a prime.

It is a super-2 number, since 2×1401281² = 3927176881922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100085 + ... + 100098.

It is an arithmetic number, because the mean of its divisors is an integer number (400368).

2^1401281 is an apocalyptic number.

It is an amenable number.

1401281 is a deficient number, since it is larger than the sum of its proper divisors (200191).

1401281 is an equidigital number, since it uses as much as digits as its factorization.

1401281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200190.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1401281 is about 1183.7571541494. The cubic root of 1401281 is about 111.9030038196.

The spelling of 1401281 in words is "one million, four hundred one thousand, two hundred eighty-one".