138104002 has 4 divisors (see below), whose sum is σ = 207156006. Its totient is φ = 69052000.

The previous prime is 138103969. The next prime is 138104009. The reversal of 138104002 is 200401831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 91030681 + 47073321 = 9541^2 + 6861^2 .

It is not an unprimeable number, because it can be changed into a prime (138104009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34525999 + ... + 34526002.

Almost surely, 2^138104002 is an apocalyptic number.

138104002 is a deficient number, since it is larger than the sum of its proper divisors (69052004).

138104002 is an equidigital number, since it uses as much as digits as its factorization.

138104002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69052003.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 138104002 is about 11751.7659098537. The cubic root of 138104002 is about 516.8947104781.

Adding to 138104002 its reverse (200401831), we get a palindrome (338505833).

The spelling of 138104002 in words is "one hundred thirty-eight million, one hundred four thousand, two".