1401729 has 8 divisors (see below), whose sum is σ = 2136000. Its totient is φ = 800976.

The previous prime is 1401721. The next prime is 1401737. The reversal of 1401729 is 9271041.

It is an interprime number because it is at equal distance from previous prime (1401721) and next prime (1401737).

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

It is not a de Polignac number, because 1401729 - 2³ = 1401721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1401699 and 1401708.

It is not an unprimeable number, because it can be changed into a prime (1401721) 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, 33354 + ... + 33395.

It is an arithmetic number, because the mean of its divisors is an integer number (267000).

2^1401729 is an apocalyptic number.

It is an amenable number.

1401729 is a deficient number, since it is larger than the sum of its proper divisors (734271).

1401729 is an equidigital number, since it uses as much as digits as its factorization.

1401729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66759.

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

The square root of 1401729 is about 1183.9463670285. The cubic root of 1401729 is about 111.9149279576.

The spelling of 1401729 in words is "one million, four hundred one thousand, seven hundred twenty-nine".