145133142 has 64 divisors (see below), whose sum is σ = 364690944. Its totient is φ = 37405440.

The previous prime is 145133119. The next prime is 145133147. The reversal of 145133142 is 241331541.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145133147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62148 + ... + 64440.

It is an arithmetic number, because the mean of its divisors is an integer number (5698296).

Almost surely, 2^145133142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145133142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182345472).

145133142 is an abundant number, since it is smaller than the sum of its proper divisors (219557802).

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

145133142 is a wasteful number, since it uses less digits than its factorization.

145133142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453.

The product of its digits is 1440, while the sum is 24.

The square root of 145133142 is about 12047.1217309364. The cubic root of 145133142 is about 525.5195364942.

Adding to 145133142 its reverse (241331541), we get a palindrome (386464683).

The spelling of 145133142 in words is "one hundred forty-five million, one hundred thirty-three thousand, one hundred forty-two".