145152146 has 4 divisors (see below), whose sum is σ = 217728222. Its totient is φ = 72576072.

The previous prime is 145152101. The next prime is 145152167. The reversal of 145152146 is 641251541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 641251541 = 7 ⋅91607363.

It can be written as a sum of positive squares in only one way, i.e., 143161225 + 1990921 = 11965^2 + 1411^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36288035 + ... + 36288038.

Almost surely, 2^145152146 is an apocalyptic number.

145152146 is a deficient number, since it is larger than the sum of its proper divisors (72576076).

145152146 is an equidigital number, since it uses as much as digits as its factorization.

145152146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72576075.

The product of its digits is 4800, while the sum is 29.

The square root of 145152146 is about 12047.9104412342. The cubic root of 145152146 is about 525.5424729907.

It can be divided in two parts, 14515 and 2146, that added together give a palindrome (16661).

The spelling of 145152146 in words is "one hundred forty-five million, one hundred fifty-two thousand, one hundred forty-six".