146650139 has 4 divisors (see below), whose sum is σ = 153026256. Its totient is φ = 140274024.

The previous prime is 146650117. The next prime is 146650159. The reversal of 146650139 is 931056641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931056641 = 37 ⋅25163693.

It is a cyclic number.

It is not a de Polignac number, because 146650139 - 2⁸ = 146649883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 146650099 and 146650108.

It is not an unprimeable number, because it can be changed into a prime (146650159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3188024 + ... + 3188069.

It is an arithmetic number, because the mean of its divisors is an integer number (38256564).

Almost surely, 2^146650139 is an apocalyptic number.

146650139 is a deficient number, since it is larger than the sum of its proper divisors (6376117).

146650139 is an equidigital number, since it uses as much as digits as its factorization.

146650139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6376116.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 146650139 is about 12109.9190335856. The cubic root of 146650139 is about 527.3441828438.

The spelling of 146650139 in words is "one hundred forty-six million, six hundred fifty thousand, one hundred thirty-nine".