42953890 has 40 divisors (see below), whose sum is σ = 90248220. Its totient is φ = 14718816.

The previous prime is 42953863. The next prime is 42953893. The reversal of 42953890 is 9835924.

It is a happy number.

42953890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 41203561 + 1750329 = 6419^2 + 1323^2 .

It is a super-2 number, since 2×42953890² = 3690073332264200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42953893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23116 + ... + 24904.

Almost surely, 2^42953890 is an apocalyptic number.

42953890 is an abundant number, since it is smaller than the sum of its proper divisors (47294330).

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

42953890 is an equidigital number, since it uses as much as digits as its factorization.

42953890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824 (or 1803 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 42953890 is about 6553.9217267221. The cubic root of 42953890 is about 350.2145351389.

The spelling of 42953890 in words is "forty-two million, nine hundred fifty-three thousand, eight hundred ninety".