42740159 has 32 divisors (see below), whose sum is σ = 57148416. Its totient is φ = 30942720.

The previous prime is 42740153. The next prime is 42740167. The reversal of 42740159 is 95104724.

It is a happy number.

It is not a de Polignac number, because 42740159 - 2¹⁶ = 42674623 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42740153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134669 + ... + 134985.

It is an arithmetic number, because the mean of its divisors is an integer number (1785888).

Almost surely, 2^42740159 is an apocalyptic number.

42740159 is a deficient number, since it is larger than the sum of its proper divisors (14408257).

42740159 is a wasteful number, since it uses less digits than its factorization.

42740159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 42740159 is about 6537.5958119174. The cubic root of 42740159 is about 349.6327003948.

The spelling of 42740159 in words is "forty-two million, seven hundred forty thousand, one hundred fifty-nine".