1234240 has 112 divisors (see below), whose sum is σ = 3657600. Its totient is φ = 387072.

The previous prime is 1234237. The next prime is 1234241. The reversal of 1234240 is 424321.

1234240 = T₂₁ + T₂₂ + ... + T₁₉₄.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42546 + ... + 42574.

2^1234240 is an apocalyptic number.

1234240 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 1234240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1828800).

1234240 is an abundant number, since it is smaller than the sum of its proper divisors (2423360).

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

1234240 is a wasteful number, since it uses less digits than its factorization.

1234240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1234240 is about 1110.9635457566. The cubic root of 1234240 is about 107.2670998937.

Adding to 1234240 its reverse (424321), we get a palindrome (1658561).

The spelling of 1234240 in words is "one million, two hundred thirty-four thousand, two hundred forty".