145712140 has 48 divisors (see below), whose sum is σ = 368121600. Its totient is φ = 47328192.

The previous prime is 145712137. The next prime is 145712167. The reversal of 145712140 is 41217541.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24730 + ... + 30049.

It is an arithmetic number, because the mean of its divisors is an integer number (7669200).

Almost surely, 2^145712140 is an apocalyptic number.

145712140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145712140 is an abundant number, since it is smaller than the sum of its proper divisors (222409460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145712140 is a wasteful number, since it uses less digits than its factorization.

145712140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54814 (or 54812 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 145712140 is about 12071.1283648216. The cubic root of 145712140 is about 526.2174497426.

Adding to 145712140 its reverse (41217541), we get a palindrome (186929681).

The spelling of 145712140 in words is "one hundred forty-five million, seven hundred twelve thousand, one hundred forty".