42545142 has 32 divisors (see below), whose sum is σ = 99523200. Its totient is φ = 13434984.

The previous prime is 42545137. The next prime is 42545143. The reversal of 42545142 is 24154524.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42545143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19708 + ... + 21759.

It is an arithmetic number, because the mean of its divisors is an integer number (3110100).

Almost surely, 2^42545142 is an apocalyptic number.

42545142 is an abundant number, since it is smaller than the sum of its proper divisors (56978058).

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

42545142 is a wasteful number, since it uses less digits than its factorization.

42545142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41497 (or 41491 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 42545142 is about 6522.6637196777. The cubic root of 42545142 is about 349.1001155021.

Adding to 42545142 its reverse (24154524), we get a palindrome (66699666).

The spelling of 42545142 in words is "forty-two million, five hundred forty-five thousand, one hundred forty-two".