144138302 has 24 divisors (see below), whose sum is σ = 274372920. Its totient is φ = 56157360.

The previous prime is 144138299. The next prime is 144138311. The reversal of 144138302 is 203831441.

It is a super-3 number, since 3×144138302³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 65777 + ... + 67932.

It is an arithmetic number, because the mean of its divisors is an integer number (11432205).

Almost surely, 2^144138302 is an apocalyptic number.

144138302 is a deficient number, since it is larger than the sum of its proper divisors (130234618).

144138302 is a wasteful number, since it uses less digits than its factorization.

144138302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133736 (or 133729 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 144138302 is about 12005.7612003571. The cubic root of 144138302 is about 524.3160278237.

Adding to 144138302 its reverse (203831441), we get a palindrome (347969743).

The spelling of 144138302 in words is "one hundred forty-four million, one hundred thirty-eight thousand, three hundred two".