355012421 has 4 divisors (see below), whose sum is σ = 356132652. Its totient is φ = 353892192.

The previous prime is 355012393. The next prime is 355012423. The reversal of 355012421 is 124210553.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 170433025 + 184579396 = 13055^2 + 13586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-355012421 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 (355012423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559640 + ... + 560273.

It is an arithmetic number, because the mean of its divisors is an integer number (89033163).

Almost surely, 2^355012421 is an apocalyptic number.

It is an amenable number.

355012421 is a deficient number, since it is larger than the sum of its proper divisors (1120231).

355012421 is a wasteful number, since it uses less digits than its factorization.

355012421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120230.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 355012421 is about 18841.7732976490. The cubic root of 355012421 is about 708.0781331680.

Adding to 355012421 its reverse (124210553), we get a palindrome (479222974).

The spelling of 355012421 in words is "three hundred fifty-five million, twelve thousand, four hundred twenty-one".