145142099 has 4 divisors (see below), whose sum is σ = 145242240. Its totient is φ = 145041960.

The previous prime is 145142089. The next prime is 145142113. The reversal of 145142099 is 990241541.

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 145142099 - 2¹⁶ = 145076563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145142089) 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, 47864 + ... + 50805.

It is an arithmetic number, because the mean of its divisors is an integer number (36310560).

Almost surely, 2^145142099 is an apocalyptic number.

145142099 is a deficient number, since it is larger than the sum of its proper divisors (100141).

145142099 is an equidigital number, since it uses as much as digits as its factorization.

145142099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100140.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 145142099 is about 12047.4934737480. The cubic root of 145142099 is about 525.5303472151.

The spelling of 145142099 in words is "one hundred forty-five million, one hundred forty-two thousand, ninety-nine".