133451020 has 24 divisors (see below), whose sum is σ = 296733024. Its totient is φ = 50240256.

The previous prime is 133450963. The next prime is 133451027. The reversal of 133451020 is 20154331.

It is not an unprimeable number, because it can be changed into a prime (133451027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195912 + ... + 196591.

It is an arithmetic number, because the mean of its divisors is an integer number (12363876).

Almost surely, 2^133451020 is an apocalyptic number.

133451020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133451020 is an abundant number, since it is smaller than the sum of its proper divisors (163282004).

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

133451020 is a wasteful number, since it uses less digits than its factorization.

133451020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392529 (or 392527 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 133451020 is about 11552.1002419473. The cubic root of 133451020 is about 511.0232180657.

It can be divided in two parts, 13345 and 1020, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 133451020 in words is "one hundred thirty-three million, four hundred fifty-one thousand, twenty".