42290378 has 16 divisors (see below), whose sum is σ = 68591880. Its totient is φ = 19439616.

The previous prime is 42290377. The next prime is 42290387. The reversal of 42290378 is 87309224.

It can be written as a sum of positive squares in 4 ways, for example, as 41692849 + 597529 = 6457^2 + 773^2 .

It is not an unprimeable number, because it can be changed into a prime (42290377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3518 + ... + 9846.

Almost surely, 2^42290378 is an apocalyptic number.

42290378 is a deficient number, since it is larger than the sum of its proper divisors (26301502).

42290378 is a wasteful number, since it uses less digits than its factorization.

42290378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6601.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 42290378 is about 6503.1052582593. The cubic root of 42290378 is about 348.4019060734.

The spelling of 42290378 in words is "forty-two million, two hundred ninety thousand, three hundred seventy-eight".