137173642 has 4 divisors (see below), whose sum is σ = 205760466. Its totient is φ = 68586820.

The previous prime is 137173627. The next prime is 137173651. The reversal of 137173642 is 246371731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 110019121 + 27154521 = 10489^2 + 5211^2 .

It is a junction number, because it is equal to n+sod(n) for n = 137173598 and 137173607.

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, 34293409 + ... + 34293412.

Almost surely, 2^137173642 is an apocalyptic number.

137173642 is a deficient number, since it is larger than the sum of its proper divisors (68586824).

137173642 is an equidigital number, since it uses as much as digits as its factorization.

137173642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68586823.

The product of its digits is 21168, while the sum is 34.

The square root of 137173642 is about 11712.1151804446. The cubic root of 137173642 is about 515.7313792242.

The spelling of 137173642 in words is "one hundred thirty-seven million, one hundred seventy-three thousand, six hundred forty-two".