145140022 has 4 divisors (see below), whose sum is σ = 217710036. Its totient is φ = 72570010.

The previous prime is 145140019. The next prime is 145140049. The reversal of 145140022 is 220041541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 220041541 = 107 ⋅2056463.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36285004 + ... + 36285007.

It is an arithmetic number, because the mean of its divisors is an integer number (54427509).

Almost surely, 2^145140022 is an apocalyptic number.

145140022 is a deficient number, since it is larger than the sum of its proper divisors (72570014).

145140022 is an equidigital number, since it uses as much as digits as its factorization.

145140022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72570013.

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

The square root of 145140022 is about 12047.4072729364. The cubic root of 145140022 is about 525.5278404034.

Adding to 145140022 its reverse (220041541), we get a palindrome (365181563).

The spelling of 145140022 in words is "one hundred forty-five million, one hundred forty thousand, twenty-two".