145214013 has 16 divisors (see below), whose sum is σ = 228417536. Its totient is φ = 80302320.

The previous prime is 145213997. The next prime is 145214039. The reversal of 145214013 is 310412541.

It is not a de Polignac number, because 145214013 - 2⁴ = 145213997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145214813) 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, 110881 + ... + 112182.

It is an arithmetic number, because the mean of its divisors is an integer number (14276096).

Almost surely, 2^145214013 is an apocalyptic number.

It is an amenable number.

145214013 is a deficient number, since it is larger than the sum of its proper divisors (83203523).

145214013 is a wasteful number, since it uses less digits than its factorization.

145214013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223104.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 145214013 is about 12050.4777083732. The cubic root of 145214013 is about 525.6171282606.

Adding to 145214013 its reverse (310412541), we get a palindrome (455626554).

The spelling of 145214013 in words is "one hundred forty-five million, two hundred fourteen thousand, thirteen".