42512049 has 6 divisors (see below), whose sum is σ = 61406306. Its totient is φ = 28341360.

The previous prime is 42512047. The next prime is 42512081. The reversal of 42512049 is 94021524.

It can be written as a sum of positive squares in only one way, i.e., 40640625 + 1871424 = 6375^2 + 1368^2 .

It is not a de Polignac number, because 42512049 - 2¹ = 42512047 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42512047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2361772 + ... + 2361789.

Almost surely, 2^42512049 is an apocalyptic number.

It is an amenable number.

42512049 is a deficient number, since it is larger than the sum of its proper divisors (18894257).

42512049 is a wasteful number, since it uses less digits than its factorization.

42512049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4723567 (or 4723564 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 42512049 is about 6520.1264558289. The cubic root of 42512049 is about 349.0095782025.

The spelling of 42512049 in words is "forty-two million, five hundred twelve thousand, forty-nine".