42630890 has 16 divisors (see below), whose sum is σ = 79211520. Its totient is φ = 16502160.

The previous prime is 42630871. The next prime is 42630893. The reversal of 42630890 is 9803624.

It is not an unprimeable number, because it can be changed into a prime (42630893) 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, 68450 + ... + 69069.

It is an arithmetic number, because the mean of its divisors is an integer number (4950720).

Almost surely, 2^42630890 is an apocalyptic number.

42630890 is a deficient number, since it is larger than the sum of its proper divisors (36580630).

42630890 is a wasteful number, since it uses less digits than its factorization.

42630890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137557.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 42630890 is about 6529.2334925319. The cubic root of 42630890 is about 349.3344904671.

The spelling of 42630890 in words is "forty-two million, six hundred thirty thousand, eight hundred ninety".