42242520 has 32 divisors (see below), whose sum is σ = 126727920. Its totient is φ = 11264640.

The previous prime is 42242509. The next prime is 42242521. The reversal of 42242520 is 2524224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42242521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175891 + ... + 176130.

Almost surely, 2^42242520 is an apocalyptic number.

42242520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42242520 is an abundant number, since it is smaller than the sum of its proper divisors (84485400).

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

42242520 is a wasteful number, since it uses less digits than its factorization.

42242520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352035 (or 352031 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 42242520 is about 6499.4245899156. The cubic root of 42242520 is about 348.2704332040.

Adding to 42242520 its reverse (2524224), we get a palindrome (44766744).

The spelling of 42242520 in words is "forty-two million, two hundred forty-two thousand, five hundred twenty".