146253739 has 4 divisors (see below), whose sum is σ = 146281960. Its totient is φ = 146225520.

The previous prime is 146253721. The next prime is 146253763. The reversal of 146253739 is 937352641.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 937352641 = 11131 ⋅84211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146253739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146253769) 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, 3849 + ... + 17530.

It is an arithmetic number, because the mean of its divisors is an integer number (36570490).

Almost surely, 2^146253739 is an apocalyptic number.

146253739 is a deficient number, since it is larger than the sum of its proper divisors (28221).

146253739 is an equidigital number, since it uses as much as digits as its factorization.

146253739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28220.

The product of its digits is 136080, while the sum is 40.

The square root of 146253739 is about 12093.5412100840. The cubic root of 146253739 is about 526.8686113796.

The spelling of 146253739 in words is "one hundred forty-six million, two hundred fifty-three thousand, seven hundred thirty-nine".