42455461 has 4 divisors (see below), whose sum is σ = 43825024. Its totient is φ = 41085900.

The previous prime is 42455423. The next prime is 42455471. The reversal of 42455461 is 16455424.

It is a happy number.

42455461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42455461 - 2¹¹ = 42453413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 1369531 = 42455461 / (4 + 2 + 4 + 5 + 5 + 4 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42455471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684735 + ... + 684796.

It is an arithmetic number, because the mean of its divisors is an integer number (10956256).

Almost surely, 2^42455461 is an apocalyptic number.

It is an amenable number.

42455461 is a deficient number, since it is larger than the sum of its proper divisors (1369563).

42455461 is a wasteful number, since it uses less digits than its factorization.

42455461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369562.

The product of its digits is 19200, while the sum is 31.

The square root of 42455461 is about 6515.7855244015. The cubic root of 42455461 is about 348.8546533129.

The spelling of 42455461 in words is "forty-two million, four hundred fifty-five thousand, four hundred sixty-one".