145439042 has 16 divisors (see below), whose sum is σ = 257367552. Its totient is φ = 60320160.

The previous prime is 145439033. The next prime is 145439057. The reversal of 145439042 is 240934541.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167123 + ... + 167990.

It is an arithmetic number, because the mean of its divisors is an integer number (16085472).

Almost surely, 2^145439042 is an apocalyptic number.

145439042 is a deficient number, since it is larger than the sum of its proper divisors (111928510).

145439042 is a wasteful number, since it uses less digits than its factorization.

145439042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335153.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 145439042 is about 12059.8110267118. The cubic root of 145439042 is about 525.8884933773. Note that the first 3 decimals are identical.

The spelling of 145439042 in words is "one hundred forty-five million, four hundred thirty-nine thousand, forty-two".