1355150421 has 6 divisors (see below), whose sum is σ = 1957439510. Its totient is φ = 903433608.

The previous prime is 1355150413. The next prime is 1355150443. The reversal of 1355150421 is 1240515531.

1355150421 is a `hidden beast` number, since 135 + 5 + 1 + 504 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1347697521 + 7452900 = 36711^2 + 2730^2 .

It is not a de Polignac number, because 1355150421 - 2³ = 1355150413 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 (1355150521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 75286126 + ... + 75286143.

Almost surely, 2^1355150421 is an apocalyptic number.

It is an amenable number.

1355150421 is a deficient number, since it is larger than the sum of its proper divisors (602289089).

1355150421 is a wasteful number, since it uses less digits than its factorization.

1355150421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150572275 (or 150572272 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 1355150421 is about 36812.3677722583. The cubic root of 1355150421 is about 1106.6131706592.

Adding to 1355150421 its reverse (1240515531), we get a palindrome (2595665952).

The spelling of 1355150421 in words is "one billion, three hundred fifty-five million, one hundred fifty thousand, four hundred twenty-one".