7401240 has 256 divisors, whose sum is σ = 31104000. Its totient is φ = 1520640.

The previous prime is 7401227. The next prime is 7401263. The reversal of 7401240 is 421047.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 83116 + ... + 83204.

It is an arithmetic number, because the mean of its divisors is an integer number (121500).

Almost surely, 2^7401240 is an apocalyptic number.

7401240 is a gapful number since it is divisible by the number (70) 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 7401240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15552000).

7401240 is an abundant number, since it is smaller than the sum of its proper divisors (23702760).

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

7401240 is a wasteful number, since it uses less digits than its factorization.

7401240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 7401240 is about 2720.5220087329. The cubic root of 7401240 is about 194.8804000332.

Adding to 7401240 its reverse (421047), we get a palindrome (7822287).

The spelling of 7401240 in words is "seven million, four hundred one thousand, two hundred forty".