1401906 has 24 divisors (see below), whose sum is σ = 3083472. Its totient is φ = 424600.

The previous prime is 1401857. The next prime is 1401937. The reversal of 1401906 is 6091041.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240 + ... + 1691.

It is an arithmetic number, because the mean of its divisors is an integer number (128478).

2^1401906 is an apocalyptic number.

1401906 is an abundant number, since it is smaller than the sum of its proper divisors (1681566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1401906 is a wasteful number, since it uses less digits than its factorization.

1401906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1958 (or 1947 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1401906 is about 1184.0211146766. The cubic root of 1401906 is about 111.9196383565.

Adding to 1401906 its reverse (6091041), we get a palindrome (7492947).

The spelling of 1401906 in words is "one million, four hundred one thousand, nine hundred six".