145200139 has 8 divisors (see below), whose sum is σ = 168216800. Its totient is φ = 122751936.

The previous prime is 145200113. The next prime is 145200149. The reversal of 145200139 is 931002541.

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

It is a cyclic number.

It is not a de Polignac number, because 145200139 - 2¹¹ = 145198091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145200149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141564 + ... + 142585.

It is an arithmetic number, because the mean of its divisors is an integer number (21027100).

Almost surely, 2^145200139 is an apocalyptic number.

145200139 is a deficient number, since it is larger than the sum of its proper divisors (23016661).

145200139 is an equidigital number, since it uses as much as digits as its factorization.

145200139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284229.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 145200139 is about 12049.9020327968. The cubic root of 145200139 is about 525.6003882685.

The spelling of 145200139 in words is "one hundred forty-five million, two hundred thousand, one hundred thirty-nine".