42605011 has 4 divisors (see below), whose sum is σ = 44847400. Its totient is φ = 40362624.

The previous prime is 42604997. The next prime is 42605051. The reversal of 42605011 is 11050624.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42605011 - 2¹⁹ = 42080723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 2242369 = 42605011 / (4 + 2 + 6 + 0 + 5 + 0 + 1 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42605011.

It is not an unprimeable number, because it can be changed into a prime (42605051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1121166 + ... + 1121203.

It is an arithmetic number, because the mean of its divisors is an integer number (11211850).

Almost surely, 2^42605011 is an apocalyptic number.

42605011 is a deficient number, since it is larger than the sum of its proper divisors (2242389).

42605011 is a wasteful number, since it uses less digits than its factorization.

42605011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242388.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 42605011 is about 6527.2514123481. The cubic root of 42605011 is about 349.2637885479.

Adding to 42605011 its reverse (11050624), we get a palindrome (53655635).

The spelling of 42605011 in words is "forty-two million, six hundred five thousand, eleven".