42299775 has 72 divisors (see below), whose sum is σ = 87744384. Its totient is φ = 19080000.

The previous prime is 42299771. The next prime is 42299797. The reversal of 42299775 is 57799224.

It is not a de Polignac number, because 42299775 - 2² = 42299771 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 42299775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42299771) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 168400 + ... + 168650.

It is an arithmetic number, because the mean of its divisors is an integer number (1218672).

Almost surely, 2^42299775 is an apocalyptic number.

42299775 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42299775 is an abundant number, since it is smaller than the sum of its proper divisors (45444609).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42299775 is a wasteful number, since it uses less digits than its factorization.

42299775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 373 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 42299775 is about 6503.8277191205. The cubic root of 42299775 is about 348.4277093444.

The spelling of 42299775 in words is "forty-two million, two hundred ninety-nine thousand, seven hundred seventy-five".