145243198 has 8 divisors (see below), whose sum is σ = 218028960. Its totient is φ = 72566880.

The previous prime is 145243187. The next prime is 145243199. The reversal of 145243198 is 891342541.

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

It is a super-3 number, since 3×145243198³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145243199) 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 in 3 ways as a sum of consecutive naturals, for example, 23958 + ... + 29401.

It is an arithmetic number, because the mean of its divisors is an integer number (27253620).

Almost surely, 2^145243198 is an apocalyptic number.

145243198 is a deficient number, since it is larger than the sum of its proper divisors (72785762).

145243198 is a wasteful number, since it uses less digits than its factorization.

145243198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54722.

The product of its digits is 34560, while the sum is 37.

The square root of 145243198 is about 12051.6885953795. The cubic root of 145243198 is about 525.6523386098.

The spelling of 145243198 in words is "one hundred forty-five million, two hundred forty-three thousand, one hundred ninety-eight".