137421254 has 4 divisors (see below), whose sum is σ = 206131884. Its totient is φ = 68710626.

The previous prime is 137421247. The next prime is 137421283. The reversal of 137421254 is 452124731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 452124731 = 23 ⋅19657597.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 34355312 + ... + 34355315.

It is an arithmetic number, because the mean of its divisors is an integer number (51532971).

Almost surely, 2^137421254 is an apocalyptic number.

137421254 is a deficient number, since it is larger than the sum of its proper divisors (68710630).

137421254 is an equidigital number, since it uses as much as digits as its factorization.

137421254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68710629.

The product of its digits is 6720, while the sum is 29.

The square root of 137421254 is about 11722.6811779558. The cubic root of 137421254 is about 516.0415080885.

Adding to 137421254 its reverse (452124731), we get a palindrome (589545985).

The spelling of 137421254 in words is "one hundred thirty-seven million, four hundred twenty-one thousand, two hundred fifty-four".