42790455 has 24 divisors (see below), whose sum is σ = 74714640. Its totient is φ = 22654080.

The previous prime is 42790453. The next prime is 42790459. The reversal of 42790455 is 55409724.

It is not a de Polignac number, because 42790455 - 2¹ = 42790453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42790453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2835 + ... + 9675.

It is an arithmetic number, because the mean of its divisors is an integer number (3113110).

Almost surely, 2^42790455 is an apocalyptic number.

42790455 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42790455 is a deficient number, since it is larger than the sum of its proper divisors (31924185).

42790455 is a wasteful number, since it uses less digits than its factorization.

42790455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6991 (or 6988 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 42790455 is about 6541.4413549309. The cubic root of 42790455 is about 349.7697941980.

The spelling of 42790455 in words is "forty-two million, seven hundred ninety thousand, four hundred fifty-five".