7242520 has 16 divisors (see below), whose sum is σ = 16295760. Its totient is φ = 2896992.

The previous prime is 7242511. The next prime is 7242523. The reversal of 7242520 is 252427.

It is a junction number, because it is equal to n+sod(n) for n = 7242491 and 7242500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7242523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90492 + ... + 90571.

It is an arithmetic number, because the mean of its divisors is an integer number (1018485).

Almost surely, 2^7242520 is an apocalyptic number.

It is an amenable number.

7242520 is an abundant number, since it is smaller than the sum of its proper divisors (9053240).

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

7242520 is a wasteful number, since it uses less digits than its factorization.

7242520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181074 (or 181070 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 7242520 is about 2691.1930439863. The cubic root of 7242520 is about 193.4772478462.

Adding to 7242520 its reverse (252427), we get a palindrome (7494947).

The spelling of 7242520 in words is "seven million, two hundred forty-two thousand, five hundred twenty".