1355303421 has 80 divisors (see below), whose sum is σ = 2234453760. Its totient is φ = 815546880.

The previous prime is 1355303413. The next prime is 1355303441. The reversal of 1355303421 is 1243035531.

1355303421 is a `hidden beast` number, since 1 + 355 + 303 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 1355303421 - 2³ = 1355303413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355303441) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2965425 + ... + 2965881.

It is an arithmetic number, because the mean of its divisors is an integer number (27930672).

Almost surely, 2^1355303421 is an apocalyptic number.

It is an amenable number.

1355303421 is a deficient number, since it is larger than the sum of its proper divisors (879150339).

1355303421 is a wasteful number, since it uses less digits than its factorization.

1355303421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 1355303421 is about 36814.4458195421. The cubic root of 1355303421 is about 1106.6548155918.

Adding to 1355303421 its reverse (1243035531), we get a palindrome (2598338952).

The spelling of 1355303421 in words is "one billion, three hundred fifty-five million, three hundred three thousand, four hundred twenty-one".