145140143 has 16 divisors (see below), whose sum is σ = 154675200. Its totient is φ = 136164600.

The previous prime is 145140139. The next prime is 145140161. The reversal of 145140143 is 341041541.

It is not a de Polignac number, because 145140143 - 2² = 145140139 is a prime.

It is a super-2 number, since 2×145140143² = 42131322220120898, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145140103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 961118 + ... + 961268.

It is an arithmetic number, because the mean of its divisors is an integer number (9667200).

Almost surely, 2^145140143 is an apocalyptic number.

145140143 is a deficient number, since it is larger than the sum of its proper divisors (9535057).

145140143 is an frugal number, since it uses more digits than its factorization.

145140143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 145140143 is about 12047.4122947627. The cubic root of 145140143 is about 525.5279864436.

Adding to 145140143 its reverse (341041541), we get a palindrome (486181684).

The spelling of 145140143 in words is "one hundred forty-five million, one hundred forty thousand, one hundred forty-three".