145001427 has 4 divisors (see below), whose sum is σ = 193335240. Its totient is φ = 96667616.

The previous prime is 145001413. The next prime is 145001429. The reversal of 145001427 is 724100541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724100541 = 3 ⋅241366847.

It is a cyclic number.

It is not a de Polignac number, because 145001427 - 2¹⁰ = 145000403 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145001397 and 145001406.

It is not an unprimeable number, because it can be changed into a prime (145001429) 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, 24166902 + ... + 24166907.

It is an arithmetic number, because the mean of its divisors is an integer number (48333810).

Almost surely, 2^145001427 is an apocalyptic number.

145001427 is a deficient number, since it is larger than the sum of its proper divisors (48333813).

145001427 is an equidigital number, since it uses as much as digits as its factorization.

145001427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48333812.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 145001427 is about 12041.6538315964. The cubic root of 145001427 is about 525.3605106620.

Adding to 145001427 its reverse (724100541), we get a palindrome (869101968).

The spelling of 145001427 in words is "one hundred forty-five million, one thousand, four hundred twenty-seven".