145240419 has 4 divisors (see below), whose sum is σ = 193653896. Its totient is φ = 96826944.

The previous prime is 145240379. The next prime is 145240441. The reversal of 145240419 is 914042541.

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

It is not a de Polignac number, because 145240419 - 2¹¹ = 145238371 is a prime.

It is a super-2 number, since 2×145240419² = 42189558622591122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145240489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24206734 + ... + 24206739.

It is an arithmetic number, because the mean of its divisors is an integer number (48413474).

Almost surely, 2^145240419 is an apocalyptic number.

145240419 is a deficient number, since it is larger than the sum of its proper divisors (48413477).

145240419 is an equidigital number, since it uses as much as digits as its factorization.

145240419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48413476.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 145240419 is about 12051.5732997812. The cubic root of 145240419 is about 525.6489860784.

The spelling of 145240419 in words is "one hundred forty-five million, two hundred forty thousand, four hundred nineteen".