133004420 has 24 divisors (see below), whose sum is σ = 280274904. Its totient is φ = 53017856.

The previous prime is 133004419. The next prime is 133004453. The reversal of 133004420 is 24400331.

It can be written as a sum of positive squares in 4 ways, for example, as 6801664 + 126202756 = 2608^2 + 11234^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5489 + ... + 17208.

It is an arithmetic number, because the mean of its divisors is an integer number (11678121).

Almost surely, 2^133004420 is an apocalyptic number.

133004420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133004420 is an abundant number, since it is smaller than the sum of its proper divisors (147270484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133004420 is a wasteful number, since it uses less digits than its factorization.

133004420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22999 (or 22997 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 133004420 is about 11532.7542243820. The cubic root of 133004420 is about 510.4525267119.

Adding to 133004420 its reverse (24400331), we get a palindrome (157404751).

The spelling of 133004420 in words is "one hundred thirty-three million, four thousand, four hundred twenty".