145640107 has 4 divisors (see below), whose sum is σ = 146276320. Its totient is φ = 145003896.

The previous prime is 145640093. The next prime is 145640119. The reversal of 145640107 is 701046541.

145640107 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145640107 is a prime.

It is a super-2 number, since 2×145640107² = 42422081533942898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145640137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317763 + ... + 318220.

It is an arithmetic number, because the mean of its divisors is an integer number (36569080).

Almost surely, 2^145640107 is an apocalyptic number.

145640107 is a deficient number, since it is larger than the sum of its proper divisors (636213).

145640107 is an equidigital number, since it uses as much as digits as its factorization.

145640107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636212.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 145640107 is about 12068.1443063961. The cubic root of 145640107 is about 526.1307233394.

Adding to 145640107 its reverse (701046541), we get a palindrome (846686648).

The spelling of 145640107 in words is "one hundred forty-five million, six hundred forty thousand, one hundred seven".