145780214 has 4 divisors (see below), whose sum is σ = 218670324. Its totient is φ = 72890106.

The previous prime is 145780211. The next prime is 145780223. The reversal of 145780214 is 412087541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 412087541 = 409 ⋅1007549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145780211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36445052 + ... + 36445055.

It is an arithmetic number, because the mean of its divisors is an integer number (54667581).

Almost surely, 2^145780214 is an apocalyptic number.

145780214 is a deficient number, since it is larger than the sum of its proper divisors (72890110).

145780214 is an equidigital number, since it uses as much as digits as its factorization.

145780214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72890109.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 145780214 is about 12073.9477388301. The cubic root of 145780214 is about 526.2993833177.

The spelling of 145780214 in words is "one hundred forty-five million, seven hundred eighty thousand, two hundred fourteen".