145120847 has 4 divisors (see below), whose sum is σ = 145301040. Its totient is φ = 144940656.

The previous prime is 145120817. The next prime is 145120897. The reversal of 145120847 is 748021541.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 145120847 - 2¹⁶ = 145055311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145120817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88883 + ... + 90500.

It is an arithmetic number, because the mean of its divisors is an integer number (36325260).

Almost surely, 2^145120847 is an apocalyptic number.

145120847 is a deficient number, since it is larger than the sum of its proper divisors (180193).

145120847 is an equidigital number, since it uses as much as digits as its factorization.

145120847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180192.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 145120847 is about 12046.6114322659. The cubic root of 145120847 is about 525.5046962239.

The spelling of 145120847 in words is "one hundred forty-five million, one hundred twenty thousand, eight hundred forty-seven".