133139450 has 12 divisors (see below), whose sum is σ = 247639470. Its totient is φ = 53255760.

The previous prime is 133139443. The next prime is 133139471. The reversal of 133139450 is 54931331.

It can be written as a sum of positive squares in 3 ways, for example, as 115842169 + 17297281 = 10763^2 + 4159^2 .

It is a super-2 number, since 2×133139450² = 35452226292605000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1331345 + ... + 1331444.

Almost surely, 2^133139450 is an apocalyptic number.

133139450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133139450 is a deficient number, since it is larger than the sum of its proper divisors (114500020).

133139450 is a wasteful number, since it uses less digits than its factorization.

133139450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662801 (or 2662796 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 133139450 is about 11538.6069349814. The cubic root of 133139450 is about 510.6252104279.

The spelling of 133139450 in words is "one hundred thirty-three million, one hundred thirty-nine thousand, four hundred fifty".