137215642 has 8 divisors (see below), whose sum is σ = 207013716. Its totient is φ = 68211072.

The previous prime is 137215633. The next prime is 137215649. The reversal of 137215642 is 246512731.

It can be written as a sum of positive squares in 2 ways, for example, as 137147521 + 68121 = 11711^2 + 261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (137215649) 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, 197943 + ... + 198634.

Almost surely, 2^137215642 is an apocalyptic number.

137215642 is a deficient number, since it is larger than the sum of its proper divisors (69798074).

137215642 is a wasteful number, since it uses less digits than its factorization.

137215642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396752.

The product of its digits is 10080, while the sum is 31.

The square root of 137215642 is about 11713.9080583723. The cubic root of 137215642 is about 515.7840096161.

The spelling of 137215642 in words is "one hundred thirty-seven million, two hundred fifteen thousand, six hundred forty-two".