145240214 has 24 divisors (see below), whose sum is σ = 268340040. Its totient is φ = 58583616.

The previous prime is 145240201. The next prime is 145240217. The reversal of 145240214 is 412042541.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145240214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145240217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41924 + ... + 45255.

It is an arithmetic number, because the mean of its divisors is an integer number (11180835).

Almost surely, 2^145240214 is an apocalyptic number.

145240214 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

145240214 is a deficient number, since it is larger than the sum of its proper divisors (123099826).

145240214 is a wasteful number, since it uses less digits than its factorization.

145240214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87212 (or 87205 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 145240214 is about 12051.5647946646. The cubic root of 145240214 is about 525.6487387687.

Adding to 145240214 its reverse (412042541), we get a palindrome (557282755).

The spelling of 145240214 in words is "one hundred forty-five million, two hundred forty thousand, two hundred fourteen".