1445140 has 24 divisors (see below), whose sum is σ = 3195360. Its totient is φ = 547488.

The previous prime is 1445137. The next prime is 1445149. The reversal of 1445140 is 415441.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445149) 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, 1522 + ... + 2281.

It is an arithmetic number, because the mean of its divisors is an integer number (133140).

2^1445140 is an apocalyptic number.

1445140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445140 is an abundant number, since it is smaller than the sum of its proper divisors (1750220).

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

1445140 is a wasteful number, since it uses less digits than its factorization.

1445140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3831 (or 3829 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1445140 is about 1202.1397589299. The cubic root of 1445140 is about 113.0585229526.

It can be divided in two parts, 14 and 45140, that added together give a palindrome (45154).

The spelling of 1445140 in words is "one million, four hundred forty-five thousand, one hundred forty".