352403421 has 24 divisors (see below), whose sum is σ = 504855360. Its totient is φ = 218583552.

The previous prime is 352403417. The next prime is 352403423. The reversal of 352403421 is 124304253.

It is not a de Polignac number, because 352403421 - 2² = 352403417 is a prime.

It is a super-2 number, since 2×352403421² = 248376342265006482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 352403391 and 352403400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (352403423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74880 + ... + 79446.

It is an arithmetic number, because the mean of its divisors is an integer number (21035640).

Almost surely, 2^352403421 is an apocalyptic number.

It is an amenable number.

352403421 is a deficient number, since it is larger than the sum of its proper divisors (152451939).

352403421 is a wasteful number, since it uses less digits than its factorization.

352403421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4693 (or 4676 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 352403421 is about 18772.4111663899. The cubic root of 352403421 is about 706.3393020864.

Adding to 352403421 its reverse (124304253), we get a palindrome (476707674).

The spelling of 352403421 in words is "three hundred fifty-two million, four hundred three thousand, four hundred twenty-one".