137443201 has 4 divisors (see below), whose sum is σ = 157077952. Its totient is φ = 117808452.

The previous prime is 137443199. The next prime is 137443217. The reversal of 137443201 is 102344731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 102344731 = 3251 ⋅31481.

It is a cyclic number.

It is not a de Polignac number, because 137443201 - 2¹ = 137443199 is a prime.

It is a super-2 number, since 2×137443201² = 37781267002252802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137443231) 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, 9817365 + ... + 9817378.

It is an arithmetic number, because the mean of its divisors is an integer number (39269488).

Almost surely, 2^137443201 is an apocalyptic number.

It is an amenable number.

137443201 is a deficient number, since it is larger than the sum of its proper divisors (19634751).

137443201 is an equidigital number, since it uses as much as digits as its factorization.

137443201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19634750.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 137443201 is about 11723.6172318956. The cubic root of 137443201 is about 516.0689782694.

Adding to 137443201 its reverse (102344731), we get a palindrome (239787932).

The spelling of 137443201 in words is "one hundred thirty-seven million, four hundred forty-three thousand, two hundred one".