235242090 has 128 divisors (see below), whose sum is σ = 677445120. Its totient is φ = 57867264.

The previous prime is 235242067. The next prime is 235242109. The reversal of 235242090 is 90242532.

235242090 is a `hidden beast` number, since 235 + 2 + 420 + 9 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 242787 + ... + 243753.

It is an arithmetic number, because the mean of its divisors is an integer number (5292540).

Almost surely, 2^235242090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 235242090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338722560).

235242090 is an abundant number, since it is smaller than the sum of its proper divisors (442203030).

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

235242090 is a wasteful number, since it uses less digits than its factorization.

235242090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1047 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 235242090 is about 15337.6037893799. The cubic root of 235242090 is about 617.3124127645.

The spelling of 235242090 in words is "two hundred thirty-five million, two hundred forty-two thousand, ninety".