138743202 has 16 divisors (see below), whose sum is σ = 298831680. Its totient is φ = 42690192.

The previous prime is 138743177. The next prime is 138743207. The reversal of 138743202 is 202347831.

It is a super-2 number, since 2×138743202² = 38499352202425608, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138743202.

It is not an unprimeable number, because it can be changed into a prime (138743207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 889302 + ... + 889457.

It is an arithmetic number, because the mean of its divisors is an integer number (18676980).

Almost surely, 2^138743202 is an apocalyptic number.

138743202 is an abundant number, since it is smaller than the sum of its proper divisors (160088478).

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

138743202 is a wasteful number, since it uses less digits than its factorization.

138743202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778777.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 138743202 is about 11778.9304268257. The cubic root of 138743202 is about 517.6909477620.

The spelling of 138743202 in words is "one hundred thirty-eight million, seven hundred forty-three thousand, two hundred two".