145004122 has 4 divisors (see below), whose sum is σ = 217506186. Its totient is φ = 72502060.

The previous prime is 145004113. The next prime is 145004129. The reversal of 145004122 is 221400541.

145004122 is digitally balanced in base 3, 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, and also an emirpimes, since its reverse is a distinct semiprime: 221400541 = 353 ⋅627197.

It can be written as a sum of positive squares in only one way, i.e., 82609921 + 62394201 = 9089^2 + 7899^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 145004122.

It is not an unprimeable number, because it can be changed into a prime (145004129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36251029 + ... + 36251032.

Almost surely, 2^145004122 is an apocalyptic number.

145004122 is a deficient number, since it is larger than the sum of its proper divisors (72502064).

145004122 is an equidigital number, since it uses as much as digits as its factorization.

145004122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72502063.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 145004122 is about 12041.7657343099. The cubic root of 145004122 is about 525.3637654295.

Adding to 145004122 its reverse (221400541), we get a palindrome (366404663).

The spelling of 145004122 in words is "one hundred forty-five million, four thousand, one hundred twenty-two".