133742540 has 12 divisors (see below), whose sum is σ = 280859376. Its totient is φ = 53497008.

The previous prime is 133742537. The next prime is 133742569. The reversal of 133742540 is 45247331.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3343544 + ... + 3343583.

It is an arithmetic number, because the mean of its divisors is an integer number (23404948).

Almost surely, 2^133742540 is an apocalyptic number.

133742540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133742540 is an abundant number, since it is smaller than the sum of its proper divisors (147116836).

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

133742540 is a wasteful number, since it uses less digits than its factorization.

133742540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6687136 (or 6687134 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 133742540 is about 11564.7109777979. The cubic root of 133742540 is about 511.3950527254.

Adding to 133742540 its reverse (45247331), we get a palindrome (178989871).

The spelling of 133742540 in words is "one hundred thirty-three million, seven hundred forty-two thousand, five hundred forty".