42380775 has 18 divisors (see below), whose sum is σ = 75909080. Its totient is φ = 22602960.

The previous prime is 42380771. The next prime is 42380777. The reversal of 42380775 is 57708324.

It is not a de Polignac number, because 42380775 - 2² = 42380771 is a prime.

It is a super-2 number, since 2×42380775² = 3592260179201250, which contains 22 as substring.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42380771) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 93955 + ... + 94404.

Almost surely, 2^42380775 is an apocalyptic number.

42380775 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42380775 is a deficient number, since it is larger than the sum of its proper divisors (33528305).

42380775 is a wasteful number, since it uses less digits than its factorization.

42380775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188375 (or 188367 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 42380775 is about 6510.0518431115. The cubic root of 42380775 is about 348.6499693843.

The spelling of 42380775 in words is "forty-two million, three hundred eighty thousand, seven hundred seventy-five".