137447342 has 4 divisors (see below), whose sum is σ = 206171016. Its totient is φ = 68723670.

The previous prime is 137447309. The next prime is 137447353. The reversal of 137447342 is 243744731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 243744731 = 23 ⋅10597597.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34361834 + ... + 34361837.

It is an arithmetic number, because the mean of its divisors is an integer number (51542754).

Almost surely, 2^137447342 is an apocalyptic number.

137447342 is a deficient number, since it is larger than the sum of its proper divisors (68723674).

137447342 is an equidigital number, since it uses as much as digits as its factorization.

137447342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68723673.

The product of its digits is 56448, while the sum is 35.

The square root of 137447342 is about 11723.7938398796. The cubic root of 137447342 is about 516.0741610653.

The spelling of 137447342 in words is "one hundred thirty-seven million, four hundred forty-seven thousand, three hundred forty-two".