1401400 has 144 divisors (see below), whose sum is σ = 4452840. Its totient is φ = 403200.

The previous prime is 1401377. The next prime is 1401401. The reversal of 1401400 is 41041.

It is a Harshad number since it is a multiple of its sum of digits (10).

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 polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 107794 + ... + 107806.

2^1401400 is an apocalyptic number.

1401400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1401400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2226420).

1401400 is an abundant number, since it is smaller than the sum of its proper divisors (3051440).

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

1401400 is a wasteful number, since it uses less digits than its factorization.

1401400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1401400 is about 1183.8074167701. The cubic root of 1401400 is about 111.9061714166.

Adding to 1401400 its reverse (41041), we get a palindrome (1442441).

It can be divided in two parts, 140 and 1400, that added together give a triangular number (1540 = T₅₅).

The spelling of 1401400 in words is "one million, four hundred one thousand, four hundred".