145771023 has 16 divisors (see below), whose sum is σ = 203904000. Its totient is φ = 92504160.

The previous prime is 145770979. The next prime is 145771027. The reversal of 145771023 is 320177541.

It is not a de Polignac number, because 145771023 - 2¹² = 145766927 is a prime.

It is a super-2 number, since 2×145771023² = 42498382292933058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145771027) 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 15 ways as a sum of consecutive naturals, for example, 5623 + ... + 17976.

It is an arithmetic number, because the mean of its divisors is an integer number (12744000).

Almost surely, 2^145771023 is an apocalyptic number.

145771023 is a deficient number, since it is larger than the sum of its proper divisors (58132977).

145771023 is a wasteful number, since it uses less digits than its factorization.

145771023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23702.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 145771023 is about 12073.5671199526. The cubic root of 145771023 is about 526.2883225591.

The spelling of 145771023 in words is "one hundred forty-five million, seven hundred seventy-one thousand, twenty-three".