146402139 has 16 divisors (see below), whose sum is σ = 211226624. Its totient is φ = 89661600.

The previous prime is 146402117. The next prime is 146402203. The reversal of 146402139 is 931204641.

It is not a de Polignac number, because 146402139 - 2²¹ = 144304987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146402339) 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 15 ways as a sum of consecutive naturals, for example, 667 + ... + 17124.

It is an arithmetic number, because the mean of its divisors is an integer number (13201664).

Almost surely, 2^146402139 is an apocalyptic number.

146402139 is a deficient number, since it is larger than the sum of its proper divisors (64824485).

146402139 is a wasteful number, since it uses less digits than its factorization.

146402139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18018.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 146402139 is about 12099.6751609289. The cubic root of 146402139 is about 527.0467512627.

The spelling of 146402139 in words is "one hundred forty-six million, four hundred two thousand, one hundred thirty-nine".