42544157 has 8 divisors (see below), whose sum is σ = 43624416. Its totient is φ = 41468112.

The previous prime is 42544127. The next prime is 42544171. The reversal of 42544157 is 75144524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42544157 - 2²² = 38349853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42544127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31898 + ... + 33204.

It is an arithmetic number, because the mean of its divisors is an integer number (5453052).

Almost surely, 2^42544157 is an apocalyptic number.

It is an amenable number.

42544157 is a deficient number, since it is larger than the sum of its proper divisors (1080259).

42544157 is a wasteful number, since it uses less digits than its factorization.

42544157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2107.

The product of its digits is 22400, while the sum is 32.

The square root of 42544157 is about 6522.5882132785. The cubic root of 42544157 is about 349.0974213733.

The spelling of 42544157 in words is "forty-two million, five hundred forty-four thousand, one hundred fifty-seven".