42238380 has 48 divisors (see below), whose sum is σ = 118752480. Its totient is φ = 11217408.

The previous prime is 42238367. The next prime is 42238381. The reversal of 42238380 is 8383224.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (42238381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14832 + ... + 17448.

It is an arithmetic number, because the mean of its divisors is an integer number (2474010).

Almost surely, 2^42238380 is an apocalyptic number.

It is an amenable number.

42238380 is an abundant number, since it is smaller than the sum of its proper divisors (76514100).

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

42238380 is a wasteful number, since it uses less digits than its factorization.

42238380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898 (or 2896 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 42238380 is about 6499.1060923792. The cubic root of 42238380 is about 348.2590553577.

The spelling of 42238380 in words is "forty-two million, two hundred thirty-eight thousand, three hundred eighty".