137421267 has 4 divisors (see below), whose sum is σ = 183228360. Its totient is φ = 91614176.

The previous prime is 137421247. The next prime is 137421283. The reversal of 137421267 is 762124731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 762124731 = 3 ⋅254041577.

It is a cyclic number.

It is not a de Polignac number, because 137421267 - 2⁶ = 137421203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137421247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22903542 + ... + 22903547.

It is an arithmetic number, because the mean of its divisors is an integer number (45807090).

Almost surely, 2^137421267 is an apocalyptic number.

137421267 is a deficient number, since it is larger than the sum of its proper divisors (45807093).

137421267 is an equidigital number, since it uses as much as digits as its factorization.

137421267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45807092.

The product of its digits is 14112, while the sum is 33.

The square root of 137421267 is about 11722.6817324365. The cubic root of 137421267 is about 516.0415243610.

Adding to 137421267 its reverse (762124731), we get a palindrome (899545998).

The spelling of 137421267 in words is "one hundred thirty-seven million, four hundred twenty-one thousand, two hundred sixty-seven".