138241197 has 6 divisors (see below), whose sum is σ = 199681742. Its totient is φ = 92160792.

The previous prime is 138241177. The next prime is 138241211. The reversal of 138241197 is 791142831.

It is a happy number.

138241197 is digitally balanced in base 2, 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 only one way, i.e., 138156516 + 84681 = 11754^2 + 291^2 .

It is not a de Polignac number, because 138241197 - 2¹² = 138237101 is a prime.

It is a super-2 number, since 2×138241197² = 38221257095985618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138241177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7680058 + ... + 7680075.

Almost surely, 2^138241197 is an apocalyptic number.

It is an amenable number.

138241197 is a deficient number, since it is larger than the sum of its proper divisors (61440545).

138241197 is a wasteful number, since it uses less digits than its factorization.

138241197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15360139 (or 15360136 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 138241197 is about 11757.6016687078. The cubic root of 138241197 is about 517.0658179982.

The spelling of 138241197 in words is "one hundred thirty-eight million, two hundred forty-one thousand, one hundred ninety-seven".