90842241 has 32 divisors (see below), whose sum is σ = 141972480. Its totient is φ = 50596416.

The previous prime is 90842233. The next prime is 90842243. The reversal of 90842241 is 14224809.

It is not a de Polignac number, because 90842241 - 2³ = 90842233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90842199 and 90842208.

It is not an unprimeable number, because it can be changed into a prime (90842243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194290 + ... + 194756.

It is an arithmetic number, because the mean of its divisors is an integer number (4436640).

Almost surely, 2^90842241 is an apocalyptic number.

It is an amenable number.

90842241 is a deficient number, since it is larger than the sum of its proper divisors (51130239).

90842241 is a wasteful number, since it uses less digits than its factorization.

90842241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 90842241 is about 9531.1196089442. The cubic root of 90842241 is about 449.5340708307.

It can be divided in two parts, 9084 and 2241, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 90842241 in words is "ninety million, eight hundred forty-two thousand, two hundred forty-one".