133972940 has 24 divisors (see below), whose sum is σ = 284907840. Its totient is φ = 52910208.

The previous prime is 133972931. The next prime is 133972957. The reversal of 133972940 is 49279331.

It is a junction number, because it is equal to n+sod(n) for n = 133972894 and 133972903.

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, 40817 + ... + 43976.

It is an arithmetic number, because the mean of its divisors is an integer number (11871160).

Almost surely, 2^133972940 is an apocalyptic number.

133972940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133972940 is an abundant number, since it is smaller than the sum of its proper divisors (150934900).

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

133972940 is a wasteful number, since it uses less digits than its factorization.

133972940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84881 (or 84879 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 133972940 is about 11574.6680297968. The cubic root of 133972940 is about 511.6885465408.

The spelling of 133972940 in words is "one hundred thirty-three million, nine hundred seventy-two thousand, nine hundred forty".