146939057 has 4 divisors (see below), whose sum is σ = 149347956. Its totient is φ = 144530160.

The previous prime is 146939053. The next prime is 146939063. The reversal of 146939057 is 750939641.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19678096 + 127260961 = 4436^2 + 11281^2 .

It is a cyclic number.

It is not a de Polignac number, because 146939057 - 2² = 146939053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 146938999 and 146939017.

It is not an unprimeable number, because it can be changed into a prime (146939053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1204358 + ... + 1204479.

It is an arithmetic number, because the mean of its divisors is an integer number (37336989).

Almost surely, 2^146939057 is an apocalyptic number.

It is an amenable number.

146939057 is a deficient number, since it is larger than the sum of its proper divisors (2408899).

146939057 is an equidigital number, since it uses as much as digits as its factorization.

146939057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408898.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 146939057 is about 12121.8421454827. The cubic root of 146939057 is about 527.6902656634.

The spelling of 146939057 in words is "one hundred forty-six million, nine hundred thirty-nine thousand, fifty-seven".