145847294 has 4 divisors (see below), whose sum is σ = 218770944. Its totient is φ = 72923646.

The previous prime is 145847269. The next prime is 145847311. The reversal of 145847294 is 492748541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 492748541 = 29 ⋅16991329.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36461822 + ... + 36461825.

It is an arithmetic number, because the mean of its divisors is an integer number (54692736).

Almost surely, 2^145847294 is an apocalyptic number.

145847294 is a deficient number, since it is larger than the sum of its proper divisors (72923650).

145847294 is an equidigital number, since it uses as much as digits as its factorization.

145847294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72923649.

The product of its digits is 322560, while the sum is 44.

The square root of 145847294 is about 12076.7253011733. The cubic root of 145847294 is about 526.3800955718.

The spelling of 145847294 in words is "one hundred forty-five million, eight hundred forty-seven thousand, two hundred ninety-four".