42780159 has 12 divisors (see below), whose sum is σ = 62576800. Its totient is φ = 28158624.

The previous prime is 42780149. The next prime is 42780163. The reversal of 42780159 is 95108724.

42780159 is a `hidden beast` number, since 427 + 80 + 159 = 666.

It is not a de Polignac number, because 42780159 - 2⁸ = 42779903 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42780119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29374 + ... + 30795.

Almost surely, 2^42780159 is an apocalyptic number.

42780159 is a deficient number, since it is larger than the sum of its proper divisors (19796641).

42780159 is a wasteful number, since it uses less digits than its factorization.

42780159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60254 (or 60251 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 42780159 is about 6540.6543250657. The cubic root of 42780159 is about 349.7417387303.

The spelling of 42780159 in words is "forty-two million, seven hundred eighty thousand, one hundred fifty-nine".