7942530 has 64 divisors (see below), whose sum is σ = 20072448. Its totient is φ = 2009280.

The previous prime is 7942523. The next prime is 7942537. The reversal of 7942530 is 352497.

It is an interprime number because it is at equal distance from previous prime (7942523) and next prime (7942537).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a d-powerful number, because it can be written as 7⁸ + 9 + 4⁴ + 2²¹ + 5⁷ + 3⁷ + 0 .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7942537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60565 + ... + 60695.

It is an arithmetic number, because the mean of its divisors is an integer number (313632).

Almost surely, 2^7942530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7942530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10036224).

7942530 is an abundant number, since it is smaller than the sum of its proper divisors (12129918).

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

7942530 is a wasteful number, since it uses less digits than its factorization.

7942530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 7942530 is about 2818.2494566663. The cubic root of 7942530 is about 199.5199319286.

The spelling of 7942530 in words is "seven million, nine hundred forty-two thousand, five hundred thirty".