35240021 has 8 divisors (see below), whose sum is σ = 36363264. Its totient is φ = 34125840.

The previous prime is 35239993. The next prime is 35240039. The reversal of 35240021 is 12004253.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 35240021 - 2¹⁰ = 35238997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35240081) 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, 6116 + ... + 10386.

It is an arithmetic number, because the mean of its divisors is an integer number (4545408).

Almost surely, 2^35240021 is an apocalyptic number.

It is an amenable number.

35240021 is a deficient number, since it is larger than the sum of its proper divisors (1123243).

35240021 is a wasteful number, since it uses less digits than its factorization.

35240021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4531.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 35240021 is about 5936.3306006320. The cubic root of 35240021 is about 327.8526659577.

Adding to 35240021 its reverse (12004253), we get a palindrome (47244274).

The spelling of 35240021 in words is "thirty-five million, two hundred forty thousand, twenty-one".