1401945 has 8 divisors (see below), whose sum is σ = 2243136. Its totient is φ = 747696.

The previous prime is 1401943. The next prime is 1401949. The reversal of 1401945 is 5491041.

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

It is not a de Polignac number, because 1401945 - 2¹ = 1401943 is a prime.

It is a Curzon number.

1401945 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1401943) 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, 46717 + ... + 46746.

It is an arithmetic number, because the mean of its divisors is an integer number (280392).

2^1401945 is an apocalyptic number.

1401945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1401945 is a deficient number, since it is larger than the sum of its proper divisors (841191).

1401945 is an equidigital number, since it uses as much as digits as its factorization.

1401945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93471.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1401945 is about 1184.0375838629. The cubic root of 1401945 is about 111.9206761877.

Adding to 1401945 its reverse (5491041), we get a palindrome (6892986).

It can be divided in two parts, 1401 and 945, that added together give a triangular number (2346 = T₆₈).

The spelling of 1401945 in words is "one million, four hundred one thousand, nine hundred forty-five".