145842386 has 4 divisors (see below), whose sum is σ = 218763582. Its totient is φ = 72921192.

The previous prime is 145842373. The next prime is 145842397. The reversal of 145842386 is 683248541.

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

It can be written as a sum of positive squares in only one way, i.e., 123099025 + 22743361 = 11095^2 + 4769^2 .

It is a super-3 number, since 3×145842386³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36460595 + ... + 36460598.

Almost surely, 2^145842386 is an apocalyptic number.

145842386 is a deficient number, since it is larger than the sum of its proper divisors (72921196).

145842386 is an equidigital number, since it uses as much as digits as its factorization.

145842386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72921195.

The product of its digits is 184320, while the sum is 41.

The square root of 145842386 is about 12076.5220986839. The cubic root of 145842386 is about 526.3741909885.

The spelling of 145842386 in words is "one hundred forty-five million, eight hundred forty-two thousand, three hundred eighty-six".