145705542 has 8 divisors (see below), whose sum is σ = 291411096. Its totient is φ = 48568512.

The previous prime is 145705507. The next prime is 145705583. The reversal of 145705542 is 245507541.

It is a sphenic number, since it is the product of 3 distinct primes.

145705542 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 12142123 + ... + 12142134.

It is an arithmetic number, because the mean of its divisors is an integer number (36426387).

Almost surely, 2^145705542 is an apocalyptic number.

145705542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

145705542 is a wasteful number, since it uses less digits than its factorization.

145705542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24284262.

The product of its (nonzero) digits is 28000, while the sum is 33.

The square root of 145705542 is about 12070.8550649902. The cubic root of 145705542 is about 526.2095070616.

The spelling of 145705542 in words is "one hundred forty-five million, seven hundred five thousand, five hundred forty-two".