7442520132 has 12 divisors (see below), whose sum is σ = 17365880336. Its totient is φ = 2480840040.

The previous prime is 7442520119. The next prime is 7442520139. The reversal of 7442520132 is 2310252447.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×7442520132² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7442520132.

It is not an unprimeable number, because it can be changed into a prime (7442520139) 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, 310104994 + ... + 310105017.

Almost surely, 2^7442520132 is an apocalyptic number.

It is an amenable number.

7442520132 is an abundant number, since it is smaller than the sum of its proper divisors (9923360204).

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

7442520132 is a wasteful number, since it uses less digits than its factorization.

7442520132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620210018 (or 620210016 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 7442520132 is about 86270.0419149081. The cubic root of 7442520132 is about 1952.4204116785.

Adding to 7442520132 its reverse (2310252447), we get a palindrome (9752772579).

The spelling of 7442520132 in words is "seven billion, four hundred forty-two million, five hundred twenty thousand, one hundred thirty-two".