1401405 has 8 divisors (see below), whose sum is σ = 2242272. Its totient is φ = 747408.

The previous prime is 1401403. The next prime is 1401409. The reversal of 1401405 is 5041041.

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

It is not a de Polignac number, because 1401405 - 2¹ = 1401403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 93427 = 1401405 / (1 + 4 + 0 + 1 + 4 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401401) 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, 46699 + ... + 46728.

It is an arithmetic number, because the mean of its divisors is an integer number (280284).

2^1401405 is an apocalyptic number.

1401405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1401405 is a deficient number, since it is larger than the sum of its proper divisors (840867).

1401405 is an equidigital number, since it uses as much as digits as its factorization.

1401405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93435.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1401405 is about 1183.8095285982. The cubic root of 1401405 is about 111.9063045050.

Adding to 1401405 its reverse (5041041), we get a palindrome (6442446).

The spelling of 1401405 in words is "one million, four hundred one thousand, four hundred five".