133420004240 has 40 divisors (see below), whose sum is σ = 310306472448. Its totient is φ = 53349943680.

The previous prime is 133420004239. The next prime is 133420004279. The reversal of 133420004240 is 42400024331.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-4 number, since 4×133420004240⁴ (a number of 46 digits) contains 4444 as substring.

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, 42992 + ... + 518351.

Almost surely, 2^133420004240 is an apocalyptic number.

133420004240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133420004240 is an abundant number, since it is smaller than the sum of its proper divisors (176886468208).

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

133420004240 is a wasteful number, since it uses less digits than its factorization.

133420004240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564327 (or 564321 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 133420004240 its reverse (42400024331), we get a palindrome (175820028571).

The spelling of 133420004240 in words is "one hundred thirty-three billion, four hundred twenty million, four thousand, two hundred forty".