145740142 has 16 divisors (see below), whose sum is σ = 226070352. Its totient is φ = 70424640.

The previous prime is 145740131. The next prime is 145740143. The reversal of 145740142 is 241047541.

It is a self number, because there is not a number n which added to its sum of digits gives 145740142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145740143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3159 + ... + 17362.

It is an arithmetic number, because the mean of its divisors is an integer number (14129397).

Almost surely, 2^145740142 is an apocalyptic number.

145740142 is a deficient number, since it is larger than the sum of its proper divisors (80330210).

145740142 is a wasteful number, since it uses less digits than its factorization.

145740142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20643.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 145740142 is about 12072.2881841016. The cubic root of 145740142 is about 526.2511559189.

Adding to 145740142 its reverse (241047541), we get a palindrome (386787683).

The spelling of 145740142 in words is "one hundred forty-five million, seven hundred forty thousand, one hundred forty-two".