1440100 has 18 divisors (see below), whose sum is σ = 3125234. Its totient is φ = 576000.

The previous prime is 1440079. The next prime is 1440107. The reversal of 1440100 is 10441.

It can be written as a sum of positive squares in 3 ways, for example, as 506944 + 933156 = 712^2 + 966^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1440107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7101 + ... + 7300.

2^1440100 is an apocalyptic number.

1440100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440100 is an abundant number, since it is smaller than the sum of its proper divisors (1685134).

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

1440100 is a wasteful number, since it uses less digits than its factorization.

1440100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14415 (or 14408 counting only the distinct ones).

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

The square root of 1440100 is about 1200.0416659433. The cubic root of 1440100 is about 112.9269373942.

Adding to 1440100 its reverse (10441), we get a palindrome (1450541).

It can be divided in two parts, 1440 and 100, that added together give a triangular number (1540 = T₅₅).

The spelling of 1440100 in words is "one million, four hundred forty thousand, one hundred".