1430240 has 48 divisors (see below), whose sum is σ = 3864672. Its totient is φ = 489984.

The previous prime is 1430239. The next prime is 1430243. The reversal of 1430240 is 420341.

1430240 = T₄₄₅ + T₄₄₆ + ... + T₄₅₈.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1430243) 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, 482 + ... + 1758.

It is an arithmetic number, because the mean of its divisors is an integer number (80514).

2^1430240 is an apocalyptic number.

1430240 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 1430240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1932336).

1430240 is an abundant number, since it is smaller than the sum of its proper divisors (2434432).

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

1430240 is a wasteful number, since it uses less digits than its factorization.

1430240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299 (or 1291 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1430240 is about 1195.9264191412. The cubic root of 1430240 is about 112.6686195679.

Adding to 1430240 its reverse (420341), we get a palindrome (1850581).

The spelling of 1430240 in words is "one million, four hundred thirty thousand, two hundred forty".