145130249 has 8 divisors (see below), whose sum is σ = 158614848. Its totient is φ = 131694160.

The previous prime is 145130179. The next prime is 145130263. The reversal of 145130249 is 942031541.

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 145130249 - 2²⁰ = 144081673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145130269) 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, 5717 + ... + 17970.

It is an arithmetic number, because the mean of its divisors is an integer number (19826856).

Almost surely, 2^145130249 is an apocalyptic number.

It is an amenable number.

145130249 is a deficient number, since it is larger than the sum of its proper divisors (13484599).

145130249 is a wasteful number, since it uses less digits than its factorization.

145130249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24255.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 145130249 is about 12047.0016601642. The cubic root of 145130249 is about 525.5160446703.

The spelling of 145130249 in words is "one hundred forty-five million, one hundred thirty thousand, two hundred forty-nine".