145347427 has 4 divisors (see below), whose sum is σ = 145392016. Its totient is φ = 145302840.

The previous prime is 145347401. The next prime is 145347431. The reversal of 145347427 is 724743541.

145347427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724743541 = 17 ⋅42631973.

It is a cyclic number.

It is not a de Polignac number, because 145347427 - 2⁷ = 145347299 is a prime.

It is a super-2 number, since 2×145347427² = 42251749071040658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145347457) 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, 16983 + ... + 24064.

It is an arithmetic number, because the mean of its divisors is an integer number (36348004).

Almost surely, 2^145347427 is an apocalyptic number.

145347427 is a deficient number, since it is larger than the sum of its proper divisors (44589).

145347427 is an equidigital number, since it uses as much as digits as its factorization.

145347427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44588.

The product of its digits is 94080, while the sum is 37.

The square root of 145347427 is about 12056.0120686735. The cubic root of 145347427 is about 525.7780475768.

The spelling of 145347427 in words is "one hundred forty-five million, three hundred forty-seven thousand, four hundred twenty-seven".