133920140 has 24 divisors (see below), whose sum is σ = 284135712. Its totient is φ = 53015040.

The previous prime is 133920133. The next prime is 133920161. The reversal of 133920140 is 41029331.

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, 32576 + ... + 36455.

It is an arithmetic number, because the mean of its divisors is an integer number (11838988).

Almost surely, 2^133920140 is an apocalyptic number.

133920140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133920140 is an abundant number, since it is smaller than the sum of its proper divisors (150215572).

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

133920140 is a wasteful number, since it uses less digits than its factorization.

133920140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69137 (or 69135 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 133920140 is about 11572.3869620749. The cubic root of 133920140 is about 511.6213172798.

Adding to 133920140 its reverse (41029331), we get a palindrome (174949471).

The spelling of 133920140 in words is "one hundred thirty-three million, nine hundred twenty thousand, one hundred forty".