42545158 has 4 divisors (see below), whose sum is σ = 63817740. Its totient is φ = 21272578.

The previous prime is 42545143. The next prime is 42545159. The reversal of 42545158 is 85154524.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42545159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10636288 + ... + 10636291.

It is an arithmetic number, because the mean of its divisors is an integer number (15954435).

Almost surely, 2^42545158 is an apocalyptic number.

42545158 is a deficient number, since it is larger than the sum of its proper divisors (21272582).

42545158 is a wasteful number, since it uses less digits than its factorization.

42545158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21272581.

The product of its digits is 32000, while the sum is 34.

The square root of 42545158 is about 6522.6649461704. The cubic root of 42545158 is about 349.1001592642.

The spelling of 42545158 in words is "forty-two million, five hundred forty-five thousand, one hundred fifty-eight".