146139156 has 36 divisors (see below), whose sum is σ = 369791604. Its totient is φ = 48662400.

The previous prime is 146139151. The next prime is 146139163. The reversal of 146139156 is 651931641.

146139156 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 52707600 + 93431556 = 7260^2 + 9666^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 146139156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146139151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51946 + ... + 54686.

It is an arithmetic number, because the mean of its divisors is an integer number (10271989).

Almost surely, 2^146139156 is an apocalyptic number.

It is an amenable number.

146139156 is an abundant number, since it is smaller than the sum of its proper divisors (223652448).

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

146139156 is a wasteful number, since it uses less digits than its factorization.

146139156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4232 (or 4227 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 146139156 is about 12088.8029184035. The cubic root of 146139156 is about 526.7309830834.

The spelling of 146139156 in words is "one hundred forty-six million, one hundred thirty-nine thousand, one hundred fifty-six".