42285090 has 16 divisors (see below), whose sum is σ = 101484288. Its totient is φ = 11276016.

The previous prime is 42285083. The next prime is 42285091. The reversal of 42285090 is 9058224.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1409503 = 42285090 / (4 + 2 + 2 + 8 + 5 + 0 + 9 + 0).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42285091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704722 + ... + 704781.

It is an arithmetic number, because the mean of its divisors is an integer number (6342768).

Almost surely, 2^42285090 is an apocalyptic number.

42285090 is an abundant number, since it is smaller than the sum of its proper divisors (59199198).

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

42285090 is a wasteful number, since it uses less digits than its factorization.

42285090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409513.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 42285090 is about 6502.6986705521. The cubic root of 42285090 is about 348.3873840461.

The spelling of 42285090 in words is "forty-two million, two hundred eighty-five thousand, ninety".