138741434 has 8 divisors (see below), whose sum is σ = 224120820. Its totient is φ = 64034496.

The previous prime is 138741433. The next prime is 138741467. The reversal of 138741434 is 434147831.

It can be written as a sum of positive squares in 2 ways, for example, as 136773025 + 1968409 = 11695^2 + 1403^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 138741394 and 138741403.

It is not an unprimeable number, because it can be changed into a prime (138741433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2668079 + ... + 2668130.

Almost surely, 2^138741434 is an apocalyptic number.

138741434 is a deficient number, since it is larger than the sum of its proper divisors (85379386).

138741434 is a wasteful number, since it uses less digits than its factorization.

138741434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5336224.

The product of its digits is 32256, while the sum is 35.

The square root of 138741434 is about 11778.8553773276. The cubic root of 138741434 is about 517.6887487798.

The spelling of 138741434 in words is "one hundred thirty-eight million, seven hundred forty-one thousand, four hundred thirty-four".