42424542 has 12 divisors (see below), whose sum is σ = 91919880. Its totient is φ = 14141508.

The previous prime is 42424519. The next prime is 42424561. The reversal of 42424542 is 24542424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1178442 + ... + 1178477.

It is an arithmetic number, because the mean of its divisors is an integer number (7659990).

Almost surely, 2^42424542 is an apocalyptic number.

42424542 is an abundant number, since it is smaller than the sum of its proper divisors (49495338).

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

42424542 is a wasteful number, since it uses less digits than its factorization.

42424542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356927 (or 2356924 counting only the distinct ones).

The product of its digits is 10240, while the sum is 27.

The square root of 42424542 is about 6513.4124696660. The cubic root of 42424542 is about 348.7699460593.

Adding to 42424542 its reverse (24542424), we get a palindrome (66966966).

The spelling of 42424542 in words is "forty-two million, four hundred twenty-four thousand, five hundred forty-two".