146139509442 has 64 divisors (see below), whose sum is σ = 298979112960. Its totient is φ = 47607001344.

The previous prime is 146139509377. The next prime is 146139509447. The reversal of 146139509442 is 244905931641.

It is a super-4 number, since 4×146139509442⁴ (a number of 46 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 146139509391 and 146139509400.

It is not an unprimeable number, because it can be changed into a prime (146139509447) 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 31 ways as a sum of consecutive naturals, for example, 55208163 + ... + 55210809.

It is an arithmetic number, because the mean of its divisors is an integer number (4671548640).

Almost surely, 2^146139509442 is an apocalyptic number.

146139509442 is an abundant number, since it is smaller than the sum of its proper divisors (152839603518).

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

146139509442 is a wasteful number, since it uses less digits than its factorization.

146139509442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3567.

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 146139509442 in words is "one hundred forty-six billion, one hundred thirty-nine million, five hundred nine thousand, four hundred forty-two".