42380873 has 4 divisors (see below), whose sum is σ = 43526340. Its totient is φ = 41235408.

The previous prime is 42380837. The next prime is 42380957. The reversal of 42380873 is 37808324.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40921609 + 1459264 = 6397^2 + 1208^2 .

It is a cyclic number.

It is not a de Polignac number, because 42380873 - 2¹⁴ = 42364489 is a prime.

It is a super-2 number, since 2×42380873² = 3592276792484258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42385873) 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, 572678 + ... + 572751.

It is an arithmetic number, because the mean of its divisors is an integer number (10881585).

Almost surely, 2^42380873 is an apocalyptic number.

It is an amenable number.

42380873 is a deficient number, since it is larger than the sum of its proper divisors (1145467).

42380873 is a wasteful number, since it uses less digits than its factorization.

42380873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145466.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 42380873 is about 6510.0593699290. The cubic root of 42380873 is about 348.6502381200.

The spelling of 42380873 in words is "forty-two million, three hundred eighty thousand, eight hundred seventy-three".