145942582 has 4 divisors (see below), whose sum is σ = 218913876. Its totient is φ = 72971290.

The previous prime is 145942523. The next prime is 145942583. The reversal of 145942582 is 285249541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 285249541 = 6427 ⋅44383.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145942583) by changing a digit.

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 as a sum of consecutive naturals, namely, 36485644 + ... + 36485647.

It is an arithmetic number, because the mean of its divisors is an integer number (54728469).

Almost surely, 2^145942582 is an apocalyptic number.

145942582 is a deficient number, since it is larger than the sum of its proper divisors (72971294).

145942582 is an equidigital number, since it uses as much as digits as its factorization.

145942582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72971293.

The product of its digits is 115200, while the sum is 40.

The square root of 145942582 is about 12080.6697662009. The cubic root of 145942582 is about 526.4947058279.

The spelling of 145942582 in words is "one hundred forty-five million, nine hundred forty-two thousand, five hundred eighty-two".