42075261 has 8 divisors (see below), whose sum is σ = 62333760. Its totient is φ = 28050156.

The previous prime is 42075247. The next prime is 42075301. The reversal of 42075261 is 16257024.

It is not a de Polignac number, because 42075261 - 2⁶ = 42075197 is a prime.

It is a super-3 number, since 3×42075261³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1558343 = 42075261 / (4 + 2 + 0 + 7 + 5 + 2 + 6 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42075361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779145 + ... + 779198.

It is an arithmetic number, because the mean of its divisors is an integer number (7791720).

Almost surely, 2^42075261 is an apocalyptic number.

It is an amenable number.

42075261 is a deficient number, since it is larger than the sum of its proper divisors (20258499).

42075261 is a wasteful number, since it uses less digits than its factorization.

42075261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558352 (or 1558346 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 42075261 is about 6486.5446117328. The cubic root of 42075261 is about 347.8101669767.

The spelling of 42075261 in words is "forty-two million, seventy-five thousand, two hundred sixty-one".