1401279 has 8 divisors (see below), whose sum is σ = 2038272. Its totient is φ = 849240.

The previous prime is 1401263. The next prime is 1401287. The reversal of 1401279 is 9721041.

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

It is not a de Polignac number, because 1401279 - 2⁴ = 1401263 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21199 + ... + 21264.

It is an arithmetic number, because the mean of its divisors is an integer number (254784).

2^1401279 is an apocalyptic number.

1401279 is a deficient number, since it is larger than the sum of its proper divisors (636993).

1401279 is a wasteful number, since it uses less digits than its factorization.

1401279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42477.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 1401279 is about 1183.7563093813. The cubic root of 1401279 is about 111.9029505811.

The spelling of 1401279 in words is "one million, four hundred one thousand, two hundred seventy-nine".