133239430 has 16 divisors (see below), whose sum is σ = 241955424. Its totient is φ = 52823680.

The previous prime is 133239409. The next prime is 133239443. The reversal of 133239430 is 34932331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57826 + ... + 60085.

It is an arithmetic number, because the mean of its divisors is an integer number (15122214).

Almost surely, 2^133239430 is an apocalyptic number.

133239430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133239430 is a deficient number, since it is larger than the sum of its proper divisors (108715994).

133239430 is a wasteful number, since it uses less digits than its factorization.

133239430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118031.

The product of its (nonzero) digits is 5832, while the sum is 28.

The square root of 133239430 is about 11542.9385340129. The cubic root of 133239430 is about 510.7529950796.

It can be divided in two parts, 133 and 239430, that multiplied together give a triangular number (31844190 = T₇₉₈₀).

The spelling of 133239430 in words is "one hundred thirty-three million, two hundred thirty-nine thousand, four hundred thirty".