146239047 has 16 divisors (see below), whose sum is σ = 217031680. Its totient is φ = 97321176.

The previous prime is 146239039. The next prime is 146239057. The reversal of 146239047 is 740932641.

It is not a de Polignac number, because 146239047 - 2³ = 146239039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146239007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11928 + ... + 20850.

It is an arithmetic number, because the mean of its divisors is an integer number (13564480).

Almost surely, 2^146239047 is an apocalyptic number.

146239047 is a deficient number, since it is larger than the sum of its proper divisors (70792633).

146239047 is an equidigital number, since it uses as much as digits as its factorization.

146239047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9539 (or 9533 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 146239047 is about 12092.9337631528. The cubic root of 146239047 is about 526.8509684965.

The spelling of 146239047 in words is "one hundred forty-six million, two hundred thirty-nine thousand, forty-seven".