145004419 has 4 divisors (see below), whose sum is σ = 165719344. Its totient is φ = 124289496.

The previous prime is 145004401. The next prime is 145004423. The reversal of 145004419 is 914400541.

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 145004419 - 2⁷ = 145004291 is a prime.

It is a super-2 number, since 2×145004419² = 42052563059055122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145004459) 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, 10357452 + ... + 10357465.

It is an arithmetic number, because the mean of its divisors is an integer number (41429836).

Almost surely, 2^145004419 is an apocalyptic number.

145004419 is a deficient number, since it is larger than the sum of its proper divisors (20714925).

145004419 is an equidigital number, since it uses as much as digits as its factorization.

145004419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20714924.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 145004419 is about 12041.7780663821. The cubic root of 145004419 is about 525.3641241157.

The spelling of 145004419 in words is "one hundred forty-five million, four thousand, four hundred nineteen".