133430241 has 16 divisors (see below), whose sum is σ = 206657408. Its totient is φ = 74995200.

The previous prime is 133430239. The next prime is 133430243. The reversal of 133430241 is 142034331.

It is an interprime number because it is at equal distance from previous prime (133430239) and next prime (133430243).

It is not a de Polignac number, because 133430241 - 2¹ = 133430239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133430243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50800 + ... + 53361.

It is an arithmetic number, because the mean of its divisors is an integer number (12916088).

Almost surely, 2^133430241 is an apocalyptic number.

It is an amenable number.

133430241 is a deficient number, since it is larger than the sum of its proper divisors (73227167).

133430241 is a wasteful number, since it uses less digits than its factorization.

133430241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104232.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 133430241 is about 11551.2008466653. The cubic root of 133430241 is about 510.9966937208.

Adding to 133430241 its reverse (142034331), we get a palindrome (275464572).

The spelling of 133430241 in words is "one hundred thirty-three million, four hundred thirty thousand, two hundred forty-one".