146157047 has 4 divisors (see below), whose sum is σ = 147053880. Its totient is φ = 145260216.

The previous prime is 146157029. The next prime is 146157079. The reversal of 146157047 is 740751641.

It is a happy number.

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-146157047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 146156998 and 146157016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146157097) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 448172 + ... + 448497.

It is an arithmetic number, because the mean of its divisors is an integer number (36763470).

Almost surely, 2^146157047 is an apocalyptic number.

146157047 is a deficient number, since it is larger than the sum of its proper divisors (896833).

146157047 is an equidigital number, since it uses as much as digits as its factorization.

146157047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896832.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 146157047 is about 12089.5428780413. The cubic root of 146157047 is about 526.7524771163.

The spelling of 146157047 in words is "one hundred forty-six million, one hundred fifty-seven thousand, forty-seven".