146139547242 has 64 divisors (see below), whose sum is σ = 331551198720. Its totient is φ = 42570753984.

The previous prime is 146139547237. The next prime is 146139547247. The reversal of 146139547242 is 242745931641.

146139547242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (146139547237) and next prime (146139547247).

It is a junction number, because it is equal to n+sod(n) for n = 146139547191 and 146139547200.

It is not an unprimeable number, because it can be changed into a prime (146139547247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2224713 + ... + 2289459.

It is an arithmetic number, because the mean of its divisors is an integer number (5180487480).

Almost surely, 2^146139547242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 146139547242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165775599360).

146139547242 is an abundant number, since it is smaller than the sum of its proper divisors (185411651478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

146139547242 is a wasteful number, since it uses less digits than its factorization.

146139547242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66307.

The product of its digits is 1451520, while the sum is 48.

The spelling of 146139547242 in words is "one hundred forty-six billion, one hundred thirty-nine million, five hundred forty-seven thousand, two hundred forty-two".