7251420 has 48 divisors (see below), whose sum is σ = 22151808. Its totient is φ = 1757760.

The previous prime is 7251397. The next prime is 7251481. The reversal of 7251420 is 241527.

7251420 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4834 + ... + 6153.

It is an arithmetic number, because the mean of its divisors is an integer number (461496).

Almost surely, 2^7251420 is an apocalyptic number.

It is an amenable number.

7251420 is an abundant number, since it is smaller than the sum of its proper divisors (14900388).

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

7251420 is a wasteful number, since it uses less digits than its factorization.

7251420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11010 (or 11008 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 7251420 is about 2692.8460780371. The cubic root of 7251420 is about 193.5564671716.

Adding to 7251420 its reverse (241527), we get a palindrome (7492947).

It can be divided in two parts, 725 and 1420, that added together give a triangular number (2145 = T₆₅).

The spelling of 7251420 in words is "seven million, two hundred fifty-one thousand, four hundred twenty".