352240421 has 8 divisors (see below), whose sum is σ = 379644384. Its totient is φ = 324880560.

The previous prime is 352240393. The next prime is 352240433. The reversal of 352240421 is 124042253.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 352240421 - 2¹⁰ = 352239397 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 (352240621) 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, 6626 + ... + 27356.

It is an arithmetic number, because the mean of its divisors is an integer number (47455548).

Almost surely, 2^352240421 is an apocalyptic number.

It is an amenable number.

352240421 is a deficient number, since it is larger than the sum of its proper divisors (27403963).

352240421 is a wasteful number, since it uses less digits than its factorization.

352240421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22051.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 352240421 is about 18768.0691867864. The cubic root of 352240421 is about 706.2303823512.

Adding to 352240421 its reverse (124042253), we get a palindrome (476282674).

The spelling of 352240421 in words is "three hundred fifty-two million, two hundred forty thousand, four hundred twenty-one".