145884542 has 4 divisors (see below), whose sum is σ = 218826816. Its totient is φ = 72942270.

The previous prime is 145884533. The next prime is 145884553. The reversal of 145884542 is 245488541.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 145884542.

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 as a sum of consecutive naturals, namely, 36471134 + ... + 36471137.

It is an arithmetic number, because the mean of its divisors is an integer number (54706704).

Almost surely, 2^145884542 is an apocalyptic number.

145884542 is a deficient number, since it is larger than the sum of its proper divisors (72942274).

145884542 is an equidigital number, since it uses as much as digits as its factorization.

145884542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72942273.

The product of its digits is 204800, while the sum is 41.

The square root of 145884542 is about 12078.2673426282. The cubic root of 145884542 is about 526.4249025668.

The spelling of 145884542 in words is "one hundred forty-five million, eight hundred eighty-four thousand, five hundred forty-two".