145554142 has 4 divisors (see below), whose sum is σ = 218331216. Its totient is φ = 72777070.

The previous prime is 145554137. The next prime is 145554173. The reversal of 145554142 is 241455541.

It is a happy number.

145554142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36388534 + ... + 36388537.

It is an arithmetic number, because the mean of its divisors is an integer number (54582804).

Almost surely, 2^145554142 is an apocalyptic number.

145554142 is a deficient number, since it is larger than the sum of its proper divisors (72777074).

145554142 is an equidigital number, since it uses as much as digits as its factorization.

145554142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72777073.

The product of its digits is 16000, while the sum is 31.

The square root of 145554142 is about 12064.5821311805. The cubic root of 145554142 is about 526.0271856296.

The spelling of 145554142 in words is "one hundred forty-five million, five hundred fifty-four thousand, one hundred forty-two".